Thanks for posting and welcome to the community forums.
It is very strange that you were able to add the speaker to a Google speaker group. I say this as this is not a feature of our speakers. This is because as the Google Assistant is available for integration with non-Google devices, like Bose products; some Google Assistant features that are supported with Google devices are unsupported with non-Google devices. The following Google Assistant features are not available on Google Assistant-enabled Bose products:
Chromecast functionality (i.e. "Hey Google, play on [Bose speaker]")
Setting a Bose speaker as a default audio device for a Google speaker
Creating Google speaker groups that include Bose speakers
Sleep timers (i.e. "Hey Google, stop playing music after 30 minutes")
Moving music from one speaker to another
Controlling home theater devices (i.e. changing inputs or channels)
Switching to or from the Bluetooth® source on your product
Broadcast / intercom feature
The Google Play music service
The YouTube Music service
The Amazon Music service
I hope this helps to explain things, do let me know if you have any questions.
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