I've just bought a Sonos ONE and have two other old sonos speaker (ie not smart). I thought I would be able to control all three through Alexa, either playing one, two or all three at a time but I can't. Apparently I have either to just control the Sonos ONE with Alexa, and then the others the old manual way on the Sonos app. OR I have to group all three on the Sonos app and then I can play all three via Alexa. This is not what I understood from the advertising.
Is there a way I can make my smart Sonos ONE with Alexa control which speakers to play via voice control?