I made the mistake of buying Nest Audio speakers in February, not knowing that in January 2022, Google crippled the ability of the Google Home to cast to more than one speaker at once after apparently losing a patent dispute with Sonos. Now instead of being able to cast any audio on the phone to a speaker group, that function only exists for apps with a built-in "cast" function, and in my experience after owning the speakers four two weeks, even that cast ability only works about 30% of the time