Sharing experience of using Google Home app on iPhone if device os matter. Upon playing music from Google Home, then playing streaming, it detect the images to be displayed but some how the sound doesn't. As worker around had to switch to second HDMI connection then switch back to HDMI connected to streaming device.
This feedback is based on connection configuration: Streaming Device 1 connected to HDMI 1, Outbput HDMI from Sound Bard connected to HDMI of TV, Connected to Google Home via WiFi.