Yes, just set the Soundbar as the group-room co-ordinator and group your Sonos ones to it and it will play to all - note the group audio to the ones will be in stereo only (obviously) and there is an audio buffer delay of between 75ms to 2 seconds depending on what setting you select in the Sonos App under the ‘Group Audio Delay’ feature in the soundbar ‘room’ settings. As you are aiming to play to 22 rooms I would set it initially to the 2 second audio buffer to help negate any potential networking issues.