Apple TV 4K occasionally starting up with wrong audio output
Here's my setup:
Apple TV 4K <-HDMI-> LG C1 TV <-eARC-> Sonos Arc soundbar
I have the Apple TV's default audio output set to "TV speakers" and most of the time this works to send the sound to the soundbar. But, once in a while (I haven't been able to see a pattern) the Apple TV starts up with the audio output set to play by Airplay to one of my other Sonos devices in my house. When this happens it's easy enough to use the Control Center to change the audio output back to the soundbar, and that fixes it for the rest of the viewing session, but its annoying to have to do it. Worse, a few times when this happened the Airplay destination was sent to one of the bedroom sonos speakers (and when there's no sound, the first instinct is to crank the volume up, blasting whoever is sleeping there).
Apple TV 4K, tvOS 15