I did literally nothing but remove any value from “micConfig:” section in MMM-GoogleAssistant.
But now that you make me double check, I saw that this does not defaults the recorder to “sox”. It actually defaults to “arecord” again.
Then actually, the working step is removing directive
device: “plughw:0”
It somehow prevents GA to try going directly “under” PulseAudio, and makes it use the PulseAusio ALSA plugin instead.
Once both goes through PulseAudio, they can work together, as PulseAudio cam make multiple wave recorders work by default