I didn't see this suggested in the forms and the solutions I did see, didn't solve a major problem for me, how to have hubitat play spotify on my google homes.
Basically I just put two google minis in a box in a closet and use the native chromecast integration to do TTS on one mini, which tells the other mini what to do. Definitely not an elegant solution, and there is a delay between the TTS and interpretation, but hey, it works (90% of the time). Obv you can use any TTS device as the speaker but the listener must be an alexa or google home.
I also use this workaround to turn on my neato vacuum because, turning it on from google home honors the no go lines, unlike IFTT.
IDK if there is a better solution out there, but this is what I am using.