I am using the HRM Pro strap with my Garmin Epix via the Virtual Running activity and Zwift. Sometimes I get running dynamics and sometimes I don't, and I can't figure out why. These are the steps I am taking before my runs:
1) On the watch, I select Virtual Run and wait for my footpod and HRM Pro to connect (I check via the Sensors menu option just to make sure).
2) I start Zwift on my phone and it then it connects to the Epix for everything (cadence, HR, etc)
3) After my run, I stop the activity and it uploads to Garmin Connect.
Sometimes the running dynamics are there and sometimes not. I know the HRM Pro has to connect to the watch via ANT+ not Bluetooth, but how do I know? Is there a way in the uploaded activity to know how it was connected? And would there be another reason why the dynamics isn't there? I make sure I have the strap on correctly each time and it is showing the HRM Pro in the activity as a connected sensor.