Zumo User Forums

I cannot remember that being an issue with the XT1. Instructions from the satnav cut the music - ie it put it on pause - but not so with the communication rider to pillion. I have Cardo Edge headsets and you can pair the headset to the XT as a phone, second phone, gps or bike I have my XT's paired as a second phone.
Maybe that is the difference - or maybe I didn't notice.
The same facility was available on the autocom wired units - it was determined by which socket you plugged your lead into.

This a table from the Cardo manual.

I cannot make a greate deal of sense from it - it looks as though someone has forgotten to label the rows - but it seems that there are different priorities from different sources.

Edit

Also - I note that in the Cardo App under the gear icon settings heading there is an option to adjust volume levels.
One of them is Audio Mixing Level - which describes itself as
"Audio mixing level is a percentage from the intercom volume during an active conversation."

You set a percentage background volume on a slider

Adjust the overall intercom / background audio music / fm ratio

The language makes that as clear as mud - but the slider is altering background vol percentage - so if you knock that down to near zero - it will just about cut out if you are talking.