The Aera 760 can talk to the AV-30 via RS232 and provide navigation guidance and flight plan waypoint info, the AV-30 traffic display I believe is tied specifically to the uAvionix product. If you add the AV-HSI they have additional autopilot interface capability (RS232 or Arinc429) but you can only have one GPS navigator connected. In my case I have a GNX375 connected to the AV-30 to use the HSI functionality and cannot therefore connect my Aera 760 (ask me how I know).
Figs
