It's been flaky with my Pixel 6 from day 1. Sometimes it won't connect at all. Other times it will drop connection in the middle of a drive. The latest annoyance is that about half the time when I plug it in the phone goes to USB Tethering instead AA and I have to change it.
Me too, Bought a pixel 6 in hopes for a more pleasant experience with android overall,but my connection to my Ford sync4 with AA has been miserable. Ford says(of course) it's not The radio. Using AA wireless and wired. So often I have complete lockups, where I shut off the truck when I get to a light so it can reboot. Occasionally it hangs if I exit AA to go to the Ford menu too.