doc: clarify tls.Server 'connection' event documentation

PR-URL: nodejs#41917
Fixes: nodejs#41880
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/api/tls.md

@@ -480,8 +480,9 @@ added: v0.3.2
 * `socket` {stream.Duplex}
 
 This event is emitted when a new TCP stream is established, before the TLS
-handshake begins. `socket` is typically an object of type [`net.Socket`][].
-Usually users will not want to access this event.
+handshake begins. `socket` is typically an object of type [`net.Socket`][] but
+will not receive events unlike the socket created from the [`net.Server`][]
+`'connection'` event. Usually users will not want to access this event.
 
 This event can also be explicitly emitted by users to inject connections
 into the TLS server. In that case, any [`Duplex`][] stream can be passed.