I have two Nest Thermostats (2020) that I could never connect to Google Home so I cannot use any additional features like simply scheduling on / off. Google support attempted to help with no success. Even hired a "Pro" at Google support suggestion to ensure my system was compatible - which it was. To add insult I am using a Pixel 3XL. Most recently in an attempt to connect to thermostats I added a "test" home profile and now I cannot delete it because Google Home cannot connect.