gcmGiacomo
The chatbot is wrong in this case, never trust any KI, if you don’t know the used data source. The validity map is the trusted reference information for your 1. question.
Ad 2.) Of course local buses or tramways belonging to regional fare networks are generally also included in the GA validity area (friends pass).
Note that the friends pass and other ‘GA like’ day passes do not grant any discount on ‘touristic’ mountain rides not included in the GA area (as opposed to the real 1-year GA travelcard).