This is relatively new - when quitting a Channels recording with the Apple Remote (this is just hitting pause, then turning off the Apple TV remote to turn everything off) we've frequently had the Apple TV and the TV itself, turn off, but the audio restarts and continues playing through the HomePods - The only way we've found to stop it is to restart the AppleTV and TV, go back into Channels, pause the show again to stop the audio, and then exit out to the main menu screen before shutting it all off -
This is new - maybe it started happening after getting HomePods on the 2 main viewing TVs, which was a challenge - anyone else notice this?