diff --git a/docs/feature_split_keyboard.md b/docs/feature_split_keyboard.md
index a84d3846017f..27df46a82acd 100644
--- a/docs/feature_split_keyboard.md
+++ b/docs/feature_split_keyboard.md
@@ -203,6 +203,22 @@ If you're having issues with serial communication, you can change this value, as
 
 This sets the maximum number of milliseconds before forcing a synchronization of data from master to slave. Under normal circumstances this sync occurs whenever the data _changes_, for safety a data transfer occurs after this number of milliseconds if no change has been detected since the last sync. 
 
+```c
+#define SPLIT_MAX_CONNECTION_ERRORS 10
+```
+This sets the maximum number of failed communication attempts (one per scan cycle) from the master part before it assumes that no slave part is connected. This makes it possible to use a master part without the slave part connected.
+
+Set to 0 to disable the disconnection check altogether.
+
+```c
+#define SPLIT_CONNECTION_CHECK_TIMEOUT 500
+```
+How long (in milliseconds) the master part should block all connection attempts to the slave after the communication has been flagged as disconnected (see `SPLIT_MAX_CONNECTION_ERRORS` above).
+
+One communication attempt will be allowed everytime this amount of time has passed since the last attempt. If that attempt succeeds, the communication is seen as working again.
+
+Set to 0 to disable this throttling of communications while disconnected. This can save you a couple of bytes of firmware size.
+
 ```c
 #define SPLIT_TRANSPORT_MIRROR
 ```
diff --git a/docs/serial_driver.md b/docs/serial_driver.md
index ed989b0a1519..3e89deffad9e 100644
--- a/docs/serial_driver.md
+++ b/docs/serial_driver.md
@@ -63,7 +63,7 @@ Configure the hardware via your config.h:
                                    //  5: about 19200 baud
 #define SERIAL_USART_DRIVER SD1    // USART driver of TX pin. default: SD1
 #define SERIAL_USART_TX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
-#define SERIAL_USART_TIMEOUT 100 // USART driver timeout. default 100
+#define SERIAL_USART_TIMEOUT 20    // USART driver timeout. default 20
 ```
 
 You must also enable the ChibiOS `SERIAL` feature:
@@ -105,10 +105,10 @@ Next configure the hardware via your config.h:
                                    //  3: 57600 baud
                                    //  4: 38400 baud
                                    //  5: 19200 baud
-#define SERIAL_USART_DRIVER SD1 // USART driver of TX and RX pin. default: SD1
+#define SERIAL_USART_DRIVER SD1    // USART driver of TX and RX pin. default: SD1
 #define SERIAL_USART_TX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
 #define SERIAL_USART_RX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
-#define SERIAL_USART_TIMEOUT 100 // USART driver timeout. default 100
+#define SERIAL_USART_TIMEOUT 20    // USART driver timeout. default 20
 ```
 
 You must also enable the ChibiOS `SERIAL` feature:
diff --git a/keyboards/ergodox_infinity/config.h b/keyboards/ergodox_infinity/config.h
index e0208ba4d395..4bee8c3d931a 100644
--- a/keyboards/ergodox_infinity/config.h
+++ b/keyboards/ergodox_infinity/config.h
@@ -67,7 +67,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SERIAL_USART_DRIVER SD1  // Only true for the master half
 #define SERIAL_USART_CONFIG { (SERIAL_USART_SPEED), } // Only field is speed
 #define SERIAL_USART_FULL_DUPLEX
-#define SERIAL_USART_TIMEOUT 50
 
 /* number of backlight levels */
 #define BACKLIGHT_LEVELS 3
diff --git a/platforms/chibios/drivers/serial_usart.h b/platforms/chibios/drivers/serial_usart.h
index c64e15566f19..7b135b31e055 100644
--- a/platforms/chibios/drivers/serial_usart.h
+++ b/platforms/chibios/drivers/serial_usart.h
@@ -110,7 +110,7 @@
 #endif
 
 #if !defined(SERIAL_USART_TIMEOUT)
-#    define SERIAL_USART_TIMEOUT 100
+#    define SERIAL_USART_TIMEOUT 20
 #endif
 
 #define HANDSHAKE_MAGIC 7
diff --git a/quantum/matrix.c b/quantum/matrix.c
index d22817bf48ed..33586c431b38 100644
--- a/quantum/matrix.c
+++ b/quantum/matrix.c
@@ -25,10 +25,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #    include "split_common/split_util.h"
 #    include "split_common/transactions.h"
 
-#    ifndef ERROR_DISCONNECT_COUNT
-#        define ERROR_DISCONNECT_COUNT 5
-#    endif  // ERROR_DISCONNECT_COUNT
-
 #    define ROWS_PER_HAND (MATRIX_ROWS / 2)
 #else
 #    define ROWS_PER_HAND (MATRIX_ROWS)
@@ -307,33 +303,31 @@ void matrix_init(void) {
 }
 
 #ifdef SPLIT_KEYBOARD
+// Fallback implementation for keyboards not using the standard split_util.c
+__attribute__((weak)) bool transport_master_if_connected(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) {
+    transport_master(master_matrix, slave_matrix);
+    return true;  // Treat the transport as always connected
+}
+
 bool matrix_post_scan(void) {
     bool changed = false;
     if (is_keyboard_master()) {
-        static uint8_t error_count;
-
         matrix_row_t slave_matrix[ROWS_PER_HAND] = {0};
-        if (!transport_master(matrix + thisHand, slave_matrix)) {
-            error_count++;
-
-            if (error_count > ERROR_DISCONNECT_COUNT) {
-                // reset other half if disconnected
-                for (int i = 0; i < ROWS_PER_HAND; ++i) {
-                    matrix[thatHand + i] = 0;
-                    slave_matrix[i]      = 0;
-                }
-
-                changed = true;
-            }
-        } else {
-            error_count = 0;
-
+        if (transport_master_if_connected(matrix + thisHand, slave_matrix)) {
             for (int i = 0; i < ROWS_PER_HAND; ++i) {
                 if (matrix[thatHand + i] != slave_matrix[i]) {
                     matrix[thatHand + i] = slave_matrix[i];
                     changed              = true;
                 }
             }
+        } else {
+            // reset other half if disconnected
+            for (int i = 0; i < ROWS_PER_HAND; ++i) {
+                matrix[thatHand + i] = 0;
+                slave_matrix[i]      = 0;
+            }
+
+            changed = true;
         }
 
         matrix_scan_quantum();
diff --git a/quantum/split_common/split_util.c b/quantum/split_common/split_util.c
index 8d414f6fe6b9..35f0a9d181dd 100644
--- a/quantum/split_common/split_util.c
+++ b/quantum/split_common/split_util.c
@@ -39,6 +39,21 @@
 #    define SPLIT_USB_TIMEOUT_POLL 10
 #endif
 
+// Max number of consecutive failed communications (one per scan cycle) before the communication is seen as disconnected.
+// Set to 0 to disable the disconnection check altogether.
+#ifndef SPLIT_MAX_CONNECTION_ERRORS
+#    define SPLIT_MAX_CONNECTION_ERRORS 10
+#endif  // SPLIT_MAX_CONNECTION_ERRORS
+
+// How long (in milliseconds) to block all connection attempts after the communication has been flagged as disconnected.
+// One communication attempt will be allowed everytime this amount of time has passed since the last attempt. If that attempt succeeds, the communication is seen as working again.
+// Set to 0 to disable communication throttling while disconnected
+#ifndef SPLIT_CONNECTION_CHECK_TIMEOUT
+#    define SPLIT_CONNECTION_CHECK_TIMEOUT 500
+#endif  // SPLIT_CONNECTION_CHECK_TIMEOUT
+
+static uint8_t connection_errors = 0;
+
 volatile bool isLeftHand = true;
 
 #if defined(SPLIT_USB_DETECT)
@@ -142,3 +157,39 @@ void split_post_init(void) {
         transport_slave_init();
     }
 }
+
+bool is_transport_connected(void) { return connection_errors < SPLIT_MAX_CONNECTION_ERRORS; }
+
+bool transport_master_if_connected(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) {
+#if SPLIT_MAX_CONNECTION_ERRORS > 0 && SPLIT_CONNECTION_CHECK_TIMEOUT > 0
+    // Throttle transaction attempts if target doesn't seem to be connected
+    // Without this, a solo half becomes unusable due to constant read timeouts
+    static uint16_t connection_check_timer = 0;
+    const bool      is_disconnected        = !is_transport_connected();
+    if (is_disconnected && timer_elapsed(connection_check_timer) < SPLIT_CONNECTION_CHECK_TIMEOUT) {
+        return false;
+    }
+#endif  // SPLIT_MAX_CONNECTION_ERRORS > 0 && SPLIT_CONNECTION_CHECK_TIMEOUT > 0
+
+    __attribute__((unused)) bool okay = transport_master(master_matrix, slave_matrix);
+#if SPLIT_MAX_CONNECTION_ERRORS > 0
+    if (!okay) {
+        if (connection_errors < UINT8_MAX) {
+            connection_errors++;
+        }
+#    if SPLIT_CONNECTION_CHECK_TIMEOUT > 0
+        bool connected = is_transport_connected();
+        if (!connected) {
+            connection_check_timer = timer_read();
+            dprintln("Target disconnected, throttling connection attempts");
+        }
+        return connected;
+    } else if (is_disconnected) {
+        dprintln("Target connected");
+#    endif  // SPLIT_CONNECTION_CHECK_TIMEOUT > 0
+    }
+
+    connection_errors = 0;
+#endif  // SPLIT_MAX_CONNECTION_ERRORS > 0
+    return true;
+}
diff --git a/quantum/split_common/split_util.h b/quantum/split_common/split_util.h
index a4c12519e056..ef72043bb786 100644
--- a/quantum/split_common/split_util.h
+++ b/quantum/split_common/split_util.h
@@ -5,8 +5,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "matrix.h"
+
 extern volatile bool isLeftHand;
 
 void matrix_master_OLED_init(void);
 void split_pre_init(void);
 void split_post_init(void);
+
+bool transport_master_if_connected(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]);
+bool is_transport_connected(void);
diff --git a/quantum/split_common/transactions.c b/quantum/split_common/transactions.c
index 7eb3eca3e789..28ea4ef6d85e 100644
--- a/quantum/split_common/transactions.c
+++ b/quantum/split_common/transactions.c
@@ -23,6 +23,7 @@
 #include "quantum.h"
 #include "transactions.h"
 #include "transport.h"
+#include "split_util.h"
 #include "transaction_id_define.h"
 
 #define SYNC_TIMER_OFFSET 2
@@ -53,34 +54,30 @@ void slave_rpc_exec_callback(uint8_t initiator2target_buffer_size, const void *i
 ////////////////////////////////////////////////////
 // Helpers
 
-bool transaction_handler_master(bool okay, matrix_row_t master_matrix[], matrix_row_t slave_matrix[], const char *prefix, bool (*handler)(matrix_row_t master_matrix[], matrix_row_t slave_matrix[])) {
-    if (okay) {
-        bool this_okay = true;
-        for (int iter = 1; iter <= 10; ++iter) {
-            if (!this_okay) {
-                for (int i = 0; i < iter * iter; ++i) {
-                    wait_us(10);
-                }
+static bool transaction_handler_master(matrix_row_t master_matrix[], matrix_row_t slave_matrix[], const char *prefix, bool (*handler)(matrix_row_t master_matrix[], matrix_row_t slave_matrix[])) {
+    int num_retries = is_transport_connected() ? 10 : 1;
+    for (int iter = 1; iter <= num_retries; ++iter) {
+        if (iter > 1) {
+            for (int i = 0; i < iter * iter; ++i) {
+                wait_us(10);
             }
-            ATOMIC_BLOCK_FORCEON { this_okay = handler(master_matrix, slave_matrix); };
-            if (this_okay) break;
-        }
-        okay &= this_okay;
-        if (!okay) {
-            dprintf("Failed to execute %s\n", prefix);
         }
+        bool this_okay = true;
+        ATOMIC_BLOCK_FORCEON { this_okay = handler(master_matrix, slave_matrix); };
+        if (this_okay) return true;
     }
-    return okay;
+    dprintf("Failed to execute %s\n", prefix);
+    return false;
 }
 
-#define TRANSACTION_HANDLER_MASTER(prefix)                                                                \
-    do {                                                                                                  \
-        okay &= transaction_handler_master(okay, master_matrix, slave_matrix, #prefix, &prefix##_master); \
+#define TRANSACTION_HANDLER_MASTER(prefix)                                                                              \
+    do {                                                                                                                \
+        if (!transaction_handler_master(master_matrix, slave_matrix, #prefix, &prefix##_handlers_master)) return false; \
     } while (0)
 
-#define TRANSACTION_HANDLER_SLAVE(prefix)                                      \
-    do {                                                                       \
-        ATOMIC_BLOCK_FORCEON { prefix##_slave(master_matrix, slave_matrix); }; \
+#define TRANSACTION_HANDLER_SLAVE(prefix)                                               \
+    do {                                                                                \
+        ATOMIC_BLOCK_FORCEON { prefix##_handlers_slave(master_matrix, slave_matrix); }; \
     } while (0)
 
 inline static bool read_if_checksum_mismatch(int8_t trans_id_checksum, int8_t trans_id_retrieve, uint32_t *last_update, void *destination, const void *equiv_shmem, size_t length) {
@@ -138,8 +135,8 @@ static void slave_matrix_handlers_slave(matrix_row_t master_matrix[], matrix_row
 }
 
 // clang-format off
-#define TRANSACTIONS_SLAVE_MATRIX_MASTER() TRANSACTION_HANDLER_MASTER(slave_matrix_handlers)
-#define TRANSACTIONS_SLAVE_MATRIX_SLAVE() TRANSACTION_HANDLER_SLAVE(slave_matrix_handlers)
+#define TRANSACTIONS_SLAVE_MATRIX_MASTER() TRANSACTION_HANDLER_MASTER(slave_matrix)
+#define TRANSACTIONS_SLAVE_MATRIX_SLAVE() TRANSACTION_HANDLER_SLAVE(slave_matrix)
 #define TRANSACTIONS_SLAVE_MATRIX_REGISTRATIONS \
     [GET_SLAVE_MATRIX_CHECKSUM] = trans_target2initiator_initializer(smatrix.checksum), \
     [GET_SLAVE_MATRIX_DATA]     = trans_target2initiator_initializer(smatrix.matrix),
@@ -160,8 +157,8 @@ static void master_matrix_handlers_slave(matrix_row_t master_matrix[], matrix_ro
     memcpy(master_matrix, split_shmem->mmatrix.matrix, sizeof(split_shmem->mmatrix.matrix));
 }
 
-#    define TRANSACTIONS_MASTER_MATRIX_MASTER()      TRANSACTION_HANDLER_MASTER(master_matrix_handlers)
-#    define TRANSACTIONS_MASTER_MATRIX_SLAVE()       TRANSACTION_HANDLER_SLAVE(master_matrix_handlers)
+#    define TRANSACTIONS_MASTER_MATRIX_MASTER()      TRANSACTION_HANDLER_MASTER(master_matrix)
+#    define TRANSACTIONS_MASTER_MATRIX_SLAVE()       TRANSACTION_HANDLER_SLAVE(master_matrix)
 #    define TRANSACTIONS_MASTER_MATRIX_REGISTRATIONS [PUT_MASTER_MATRIX] = trans_initiator2target_initializer(mmatrix.matrix),
 
 #else  // SPLIT_TRANSPORT_MIRROR
@@ -196,8 +193,8 @@ static void encoder_handlers_slave(matrix_row_t master_matrix[], matrix_row_t sl
 }
 
 // clang-format off
-#    define TRANSACTIONS_ENCODERS_MASTER() TRANSACTION_HANDLER_MASTER(encoder_handlers)
-#    define TRANSACTIONS_ENCODERS_SLAVE() TRANSACTION_HANDLER_SLAVE(encoder_handlers)
+#    define TRANSACTIONS_ENCODERS_MASTER() TRANSACTION_HANDLER_MASTER(encoder)
+#    define TRANSACTIONS_ENCODERS_SLAVE() TRANSACTION_HANDLER_SLAVE(encoder)
 #    define TRANSACTIONS_ENCODERS_REGISTRATIONS \
     [GET_ENCODERS_CHECKSUM] = trans_target2initiator_initializer(encoders.checksum), \
     [GET_ENCODERS_DATA]     = trans_target2initiator_initializer(encoders.state),
@@ -238,8 +235,8 @@ static void sync_timer_handlers_slave(matrix_row_t master_matrix[], matrix_row_t
     }
 }
 
-#    define TRANSACTIONS_SYNC_TIMER_MASTER()      TRANSACTION_HANDLER_MASTER(sync_timer_handlers)
-#    define TRANSACTIONS_SYNC_TIMER_SLAVE()       TRANSACTION_HANDLER_SLAVE(sync_timer_handlers)
+#    define TRANSACTIONS_SYNC_TIMER_MASTER()      TRANSACTION_HANDLER_MASTER(sync_timer)
+#    define TRANSACTIONS_SYNC_TIMER_SLAVE()       TRANSACTION_HANDLER_SLAVE(sync_timer)
 #    define TRANSACTIONS_SYNC_TIMER_REGISTRATIONS [PUT_SYNC_TIMER] = trans_initiator2target_initializer(sync_timer),
 
 #else  // DISABLE_SYNC_TIMER
@@ -272,8 +269,8 @@ static void layer_state_handlers_slave(matrix_row_t master_matrix[], matrix_row_
 }
 
 // clang-format off
-#    define TRANSACTIONS_LAYER_STATE_MASTER() TRANSACTION_HANDLER_MASTER(layer_state_handlers)
-#    define TRANSACTIONS_LAYER_STATE_SLAVE() TRANSACTION_HANDLER_SLAVE(layer_state_handlers)
+#    define TRANSACTIONS_LAYER_STATE_MASTER() TRANSACTION_HANDLER_MASTER(layer_state)
+#    define TRANSACTIONS_LAYER_STATE_SLAVE() TRANSACTION_HANDLER_SLAVE(layer_state)
 #    define TRANSACTIONS_LAYER_STATE_REGISTRATIONS \
     [PUT_LAYER_STATE]         = trans_initiator2target_initializer(layers.layer_state), \
     [PUT_DEFAULT_LAYER_STATE] = trans_initiator2target_initializer(layers.default_layer_state),
@@ -303,8 +300,8 @@ static void led_state_handlers_slave(matrix_row_t master_matrix[], matrix_row_t
     set_split_host_keyboard_leds(split_shmem->led_state);
 }
 
-#    define TRANSACTIONS_LED_STATE_MASTER()      TRANSACTION_HANDLER_MASTER(led_state_handlers)
-#    define TRANSACTIONS_LED_STATE_SLAVE()       TRANSACTION_HANDLER_SLAVE(led_state_handlers)
+#    define TRANSACTIONS_LED_STATE_MASTER()      TRANSACTION_HANDLER_MASTER(led_state)
+#    define TRANSACTIONS_LED_STATE_SLAVE()       TRANSACTION_HANDLER_SLAVE(led_state)
 #    define TRANSACTIONS_LED_STATE_REGISTRATIONS [PUT_LED_STATE] = trans_initiator2target_initializer(led_state),
 
 #else  // SPLIT_LED_STATE_ENABLE
@@ -360,8 +357,8 @@ static void mods_handlers_slave(matrix_row_t master_matrix[], matrix_row_t slave
 #    endif
 }
 
-#    define TRANSACTIONS_MODS_MASTER()      TRANSACTION_HANDLER_MASTER(mods_handlers)
-#    define TRANSACTIONS_MODS_SLAVE()       TRANSACTION_HANDLER_SLAVE(mods_handlers)
+#    define TRANSACTIONS_MODS_MASTER()      TRANSACTION_HANDLER_MASTER(mods)
+#    define TRANSACTIONS_MODS_SLAVE()       TRANSACTION_HANDLER_SLAVE(mods)
 #    define TRANSACTIONS_MODS_REGISTRATIONS [PUT_MODS] = trans_initiator2target_initializer(mods),
 
 #else  // SPLIT_MODS_ENABLE
@@ -385,8 +382,8 @@ static bool backlight_handlers_master(matrix_row_t master_matrix[], matrix_row_t
 
 static void backlight_handlers_slave(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) { backlight_set(split_shmem->backlight_level); }
 
-#    define TRANSACTIONS_BACKLIGHT_MASTER()      TRANSACTION_HANDLER_MASTER(backlight_handlers)
-#    define TRANSACTIONS_BACKLIGHT_SLAVE()       TRANSACTION_HANDLER_SLAVE(backlight_handlers)
+#    define TRANSACTIONS_BACKLIGHT_MASTER()      TRANSACTION_HANDLER_MASTER(backlight)
+#    define TRANSACTIONS_BACKLIGHT_SLAVE()       TRANSACTION_HANDLER_SLAVE(backlight)
 #    define TRANSACTIONS_BACKLIGHT_REGISTRATIONS [PUT_BACKLIGHT] = trans_initiator2target_initializer(backlight_level),
 
 #else  // BACKLIGHT_ENABLE
@@ -422,8 +419,8 @@ static void rgblight_handlers_slave(matrix_row_t master_matrix[], matrix_row_t s
     }
 }
 
-#    define TRANSACTIONS_RGBLIGHT_MASTER()      TRANSACTION_HANDLER_MASTER(rgblight_handlers)
-#    define TRANSACTIONS_RGBLIGHT_SLAVE()       TRANSACTION_HANDLER_SLAVE(rgblight_handlers)
+#    define TRANSACTIONS_RGBLIGHT_MASTER()      TRANSACTION_HANDLER_MASTER(rgblight)
+#    define TRANSACTIONS_RGBLIGHT_SLAVE()       TRANSACTION_HANDLER_SLAVE(rgblight)
 #    define TRANSACTIONS_RGBLIGHT_REGISTRATIONS [PUT_RGBLIGHT] = trans_initiator2target_initializer(rgblight_sync),
 
 #else  // defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_SPLIT)
@@ -452,8 +449,8 @@ static void led_matrix_handlers_slave(matrix_row_t master_matrix[], matrix_row_t
     led_matrix_set_suspend_state(split_shmem->led_matrix_sync.led_suspend_state);
 }
 
-#    define TRANSACTIONS_LED_MATRIX_MASTER()      TRANSACTION_HANDLER_MASTER(led_matrix_handlers)
-#    define TRANSACTIONS_LED_MATRIX_SLAVE()       TRANSACTION_HANDLER_SLAVE(led_matrix_handlers)
+#    define TRANSACTIONS_LED_MATRIX_MASTER()      TRANSACTION_HANDLER_MASTER(led_matrix)
+#    define TRANSACTIONS_LED_MATRIX_SLAVE()       TRANSACTION_HANDLER_SLAVE(led_matrix)
 #    define TRANSACTIONS_LED_MATRIX_REGISTRATIONS [PUT_LED_MATRIX] = trans_initiator2target_initializer(led_matrix_sync),
 
 #else  // defined(LED_MATRIX_ENABLE) && defined(LED_MATRIX_SPLIT)
@@ -482,8 +479,8 @@ static void rgb_matrix_handlers_slave(matrix_row_t master_matrix[], matrix_row_t
     rgb_matrix_set_suspend_state(split_shmem->rgb_matrix_sync.rgb_suspend_state);
 }
 
-#    define TRANSACTIONS_RGB_MATRIX_MASTER()      TRANSACTION_HANDLER_MASTER(rgb_matrix_handlers)
-#    define TRANSACTIONS_RGB_MATRIX_SLAVE()       TRANSACTION_HANDLER_SLAVE(rgb_matrix_handlers)
+#    define TRANSACTIONS_RGB_MATRIX_MASTER()      TRANSACTION_HANDLER_MASTER(rgb_matrix)
+#    define TRANSACTIONS_RGB_MATRIX_SLAVE()       TRANSACTION_HANDLER_SLAVE(rgb_matrix)
 #    define TRANSACTIONS_RGB_MATRIX_REGISTRATIONS [PUT_RGB_MATRIX] = trans_initiator2target_initializer(rgb_matrix_sync),
 
 #else  // defined(RGB_MATRIX_ENABLE) && defined(RGB_MATRIX_SPLIT)
@@ -507,8 +504,8 @@ static bool wpm_handlers_master(matrix_row_t master_matrix[], matrix_row_t slave
 
 static void wpm_handlers_slave(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) { set_current_wpm(split_shmem->current_wpm); }
 
-#    define TRANSACTIONS_WPM_MASTER()      TRANSACTION_HANDLER_MASTER(wpm_handlers)
-#    define TRANSACTIONS_WPM_SLAVE()       TRANSACTION_HANDLER_SLAVE(wpm_handlers)
+#    define TRANSACTIONS_WPM_MASTER()      TRANSACTION_HANDLER_MASTER(wpm)
+#    define TRANSACTIONS_WPM_SLAVE()       TRANSACTION_HANDLER_SLAVE(wpm)
 #    define TRANSACTIONS_WPM_REGISTRATIONS [PUT_WPM] = trans_initiator2target_initializer(current_wpm),
 
 #else  // defined(WPM_ENABLE) && defined(SPLIT_WPM_ENABLE)
@@ -538,8 +535,8 @@ static void oled_handlers_slave(matrix_row_t master_matrix[], matrix_row_t slave
     }
 }
 
-#    define TRANSACTIONS_OLED_MASTER()      TRANSACTION_HANDLER_MASTER(oled_handlers)
-#    define TRANSACTIONS_OLED_SLAVE()       TRANSACTION_HANDLER_SLAVE(oled_handlers)
+#    define TRANSACTIONS_OLED_MASTER()      TRANSACTION_HANDLER_MASTER(oled)
+#    define TRANSACTIONS_OLED_SLAVE()       TRANSACTION_HANDLER_SLAVE(oled)
 #    define TRANSACTIONS_OLED_REGISTRATIONS [PUT_OLED] = trans_initiator2target_initializer(current_oled_state),
 
 #else  // defined(OLED_DRIVER_ENABLE) && defined(SPLIT_OLED_ENABLE)
@@ -569,8 +566,8 @@ static void st7565_handlers_slave(matrix_row_t master_matrix[], matrix_row_t sla
     }
 }
 
-#    define TRANSACTIONS_ST7565_MASTER()      TRANSACTION_HANDLER_MASTER(st7565_handlers)
-#    define TRANSACTIONS_ST7565_SLAVE()       TRANSACTION_HANDLER_SLAVE(st7565_handlers)
+#    define TRANSACTIONS_ST7565_MASTER()      TRANSACTION_HANDLER_MASTER(st7565)
+#    define TRANSACTIONS_ST7565_SLAVE()       TRANSACTION_HANDLER_SLAVE(st7565)
 #    define TRANSACTIONS_ST7565_REGISTRATIONS [PUT_ST7565] = trans_initiator2target_initializer(current_st7565_state),
 
 #else  // defined(ST7565_ENABLE) && defined(SPLIT_ST7565_ENABLE)
@@ -618,7 +615,6 @@ split_transaction_desc_t split_transaction_table[NUM_TOTAL_TRANSACTIONS] = {
 };
 
 bool transactions_master(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) {
-    bool okay = true;
     TRANSACTIONS_SLAVE_MATRIX_MASTER();
     TRANSACTIONS_MASTER_MATRIX_MASTER();
     TRANSACTIONS_ENCODERS_MASTER();
@@ -633,7 +629,7 @@ bool transactions_master(matrix_row_t master_matrix[], matrix_row_t slave_matrix
     TRANSACTIONS_WPM_MASTER();
     TRANSACTIONS_OLED_MASTER();
     TRANSACTIONS_ST7565_MASTER();
-    return okay;
+    return true;
 }
 
 void transactions_slave(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) {
@@ -666,6 +662,10 @@ void transaction_register_rpc(int8_t transaction_id, slave_callback_t callback)
 }
 
 bool transaction_rpc_exec(int8_t transaction_id, uint8_t initiator2target_buffer_size, const void *initiator2target_buffer, uint8_t target2initiator_buffer_size, void *target2initiator_buffer) {
+    // Prevent transaction attempts while transport is disconnected
+    if (!is_transport_connected()) {
+        return false;
+    }
     // Prevent invoking RPC on QMK core sync data
     if (transaction_id <= GET_RPC_RESP_DATA) return false;
     // Prevent sizing issues
diff --git a/quantum/split_common/transport.c b/quantum/split_common/transport.c
index a711ef85f056..bcc0261417d4 100644
--- a/quantum/split_common/transport.c
+++ b/quantum/split_common/transport.c
@@ -115,4 +115,4 @@ bool transport_execute_transaction(int8_t id, const void *initiator2target_buf,
 
 bool transport_master(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) { return transactions_master(master_matrix, slave_matrix); }
 
-void transport_slave(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) { transactions_slave(master_matrix, slave_matrix); }
\ No newline at end of file
+void transport_slave(matrix_row_t master_matrix[], matrix_row_t slave_matrix[]) { transactions_slave(master_matrix, slave_matrix); }