Best answer by Ken_Griffiths
It will work .. Create a new IFTTT applet. Load google assistant as your trigger action. (See screenshot 1).. Here, in this simple example, I have chosen to use a simple phrase and completed the trigger fields.
Choose 'Sonos' for the responding Action to the trigger. (See screenshot 2) ... Here, I have chosen to play a playlist in the lounge and grouped rooms.
Save the trigger and then in my case, I simply say to my Google Home device... 'Hey Google, lets hear some music' and she replies 'Okay, Music is on its way'.
Then the playlist, Ken's Playlist plays on the lounge speakers and any other speakers grouped with them.
Hope that helps ?