HomePod Can't change HomePod volume from iPhone during phone call

[macman01101]

Hey everybody, I just got a new HomePod and got it all set up. I have it in my office and was planning to use it for some speakerphone phone calls.

I was under the impression that I would be able to adjust the volume of the HomePod during an ongoing phone call by using the volume buttons on my iPhone, but they do not do anything. The volume meter on the iPhone increases/decreases (and will even mute), but the volume on the HomePod stays the same.

Does anyone know if this is supposed to work? Maybe I'm doing something wrong or missing a setting somewhere? Thanks in advance.

 

[Aknot]

According to this article we should be able to use the volume buttons on the phone:
https://support.apple.com/en-us/HT208340

But it doesn’t work for me either, is it working for anybody out there?