GTV remote does not control Wiim Amp through HDMI ARC

[Graham]

In my case, The google TV remote does control the WIIM Amp volume, directly.

It’s acting as a second stage volume control, where the master volume is limited by the overall google TV remote volume level.
I couldn’t figure out why the Wiim amp was so low in volume, until I figured out the above.

The LG tv remote and Wiim remote control the WIIM amp volume directly , no issues—As evidenced by the amp‘s led (volume level) interface
is this a bug, or is there a google tv / wiim home setting ?

 

[Graham]

Found it. In google Tv, the audio volume remote setting was defaulting to Chromecast rather than CEC (hdmi e-arc) like all the other control settings. Still overly complicated in 2023 :\