I was able to get the following working. Home Assistant (hass.io), Google Assistant installed, and The old Google Voice kit. Right now I'm not using any of the Google software that is part of the manual, I'm using the two mics on the very cool Pi hat that comes with it. The kit is about $10.00.
Here is my Raspberry Pi with the Google voice hat, hass.io, MySensors serial gateway, and Aeon Labs series 2 Z-Stick, and powered USB hub to get the amps it needs.