I opened up a bug in the Connexion github repo (link below).
spec-first/connexion#1231
All details are listed in the bug including how to recreate the issue. This issue is preventing the AI project from implementing functions with array parameters that either have no defined data type or array parameters that use the oneOf tag to specify different data type options. Both of these are OpenApi 3.0 compliant but could not be implemented via Connexion.