Why doesn't it count time on my trainer as vigorous. I'm frequently in HR zones 4-5 for >15min. Also just finished a ride, half hour ride home from work; again good heart rate, and it was also captured through my Edge 530, yet Connect says my bike ride this morning was intense, but nothing for the ride home. My watch is some Venue 3 or something like that. It looks like the venue flatlined for my entire ride home. Why?