Why would I wear a watch when I'm running an Edge 1030 with a heart rate monitor?
So you can track intensity minutes ????. I have a 1030 and a 935, which I always wear, even when recording a ride on my 1030 (oe even my old 520). I get intensity minutes tracked just fine.
Of course an Edge owner would track a ride using the Edge, rather than their watch.
When I'm riding, and tracking the activity on my Edge 1030, my Vivoactive 3 tends to pick up my heart rate and record the intensity minutes.
If I REALLY want intensity minutes to be recorded while I'm doing an activity with a device that doesn't track them ... I activate the Cardio workout on my VA 3. It connects to my ANT+ HRM and records the activity. To avoid duplicate activities, I just discard the one recorded by my VA 3.