Cadence reading on companion app only

Using Kickr SNAP and Running Zwift through my Apple TV 4K and using the phone companion app as well. I have a Pioneer power meter on my bike, tied to my Garmin 520, but it is Ant+ and I just use it occasionally on my rides to monitor watts and compare it to Zwift.  I noticed during my rides that while my Apple TV doesn’t pick up my cadence, the phone companion app does.  This did the same thing before I linked my apple TV and was just using my laptop.  Any ideas as to why and how I can get the cadence to show on my actual ride?