Apologises if this topic has been covered elsewhere, but have looked and nothing similar has come up.
I have an Amazon Echo Plus (plus bit is irrelevant I think), and a Sonos One.
I can play music on the Echo or the One, but not both at the same time.
I have a group for both the Echo and the One, however Alexa on the Echo, does not recognise this group.
Can anyone assist me in getting my One and Echo to play the same music at the same time?