[konradb]

Although presumably with Airplay 2 you would still need your phone to play the music from, where with Sonos, once it was playing, you wouldn't need your phone as the speakers themselves would have the music. Though that might not be useful for your use-case.

[wrboyce]

We don't know for certain yet, but the AppleTV will opt to play music from iCloud as opposed to streaming from the AirPlay device if possible. You'd hope this functionality has been extended to the HomePod.