Not sure, but perhaps see if any information in this link may help.,,

https://support.google.com/googlenest/answer/7257763

Thanks for the answer, no dice though unfortunately. :(

Hi @Baronen , thanks for the post and welcome to the Sonos Community.

Because the Sonos Google Assistant is just a service for the Sonos speaker, when activating Google near the speaker, both will respond to the wake word as if you had two Google Home devices close to each other. The only foreseeable solution would be to mute the Sonos mic as needed.

I would be happy to submit your feedback to our development team. Sonos is always trying to include more features with our voice services, this feedback is greatly appreciated.

Just got my second Sonos one, it sits around 10m from the beam in my living room. I thought it would work like the Google home speakers - nearest speaker responds. I have another Sonos one in the bathroom but since that one is further away I never experienced any issues.
 

that was a deal breaker for me because the dual answers are really terrible, brings an echo because there is a slight delay on the one compared to the beam. I even got the speakers to respond to each other which was amusing, for a little while :)
 

Really hoping for a solution in the future. Until then I guess I will deactivate one mic or set up the Google home mini again.