Question if there is a way to get this setup to work correctly.

Running Zwift on an iphone with a lightning to HDMI mirror cable to TV. Elite Direct & HR monitor both bluetooth connection to the app.

Here is the issue - now using BT headphones/Spotify. They will connect and work fine. I can also run Zwift fine on the iphone (and headphones are playing music. As soon as I connect the lightning to HDMI cable to the iphone, the BT headphone disconnect and music/Spotify starts to play out of the TV....can get the music back to the headphone.

Anyone able to get this setup to work and did you have to do something special?
I could always run Spotify out of an old ipad and connect the headphones thru that, but really just prefer to run it thru the iphone.