Thanks, I'm not sure what you mean though. While I want to speak to the Home or Alexa device, I just want it to play back its sound through the B2 and its hi-fi speakers.
So if I say (for example), "Alexa, play BBC Radio Three", it would do so, but the sound would come out through the B2 hi-fi.
I don't expect to be able to 'control' the B2 directly, just have it act as the speaker. Is that possible?