Before updating to tvOS 14.2., the default audio output for my Apple TV 4K was the Amazon Echo Plus that's sitting right next to the Apple TV. Now after the update whenever I put the Apple TV to sleep, it disconnects from Amazon Echo and when I wake it up again, it does not automatically connect to the Echo, instead it has the TV as the audio output until I go to Bluetooth settings and connect to the Echo.
Before the update, it would always automatically connect to the Echo every time I would wake the Apple TV. I hope this is not intended behavior because it's very annoying to have to connect every time so I definitely won't be doing it. If that's the case, I am selling the Echo and I'll just use the default TV speakers. I had planned on buying a HomePod Mini as the Echo is not a good experience, but if this is intended behavior with 14.2. to push users to buy HomePods exclusively, then I guess the HomePod Mini is out of the question, as well.