I've just tried setting up the Home 500 and linked to Google. However, as much as it appears to operate happily with the Assistant, when I try to integrate the Bose into my current Google Nest hub, the problems begin.
Specifically, the Google Home app isnt happy accommodating the new Bose speaker. I've already set up the Bose app successfully but it appears the two apps conflict. As such, the leaves me with being forced to talk to the Bose speaker and the Google home speaker separately. This is ludicrous and a glitch that leaves me stranded when the voice instructions were aimed to control both speakers together. Adding Google speakers to Google home hub worked and it seems adding Bose additional speakers to the 500 would be successful but I foresee the Bose being returned to the store. Great shame. I've even ventured into the Spotify app and attempted joining the two systems that way but impossible. 😥