I previously owned Bose speakers and Echo Dots, and this is how they operate, and is one of the fundamentals of how Spotify Connect works (Spotify can be playing on another device but can be controlled via the app).
I do some basic home automation development and am familiar with the Spotify API. It doesn't look like playing Spotify through Sonos sends any information to Spotify at all - if I query the Spotify API while playing, I get nothing back.
Please help. I am not the first person to report this. I have now invested in 4 Sonos Ones, a Sub and a playbar. If Spotify Connect does not work as it should, they will all have to go back.
Best answer by Keith N