I have an Forerunner 910XT and my friend have a Fenix 3.
On his Garmin Connect "time in heart rate zones" shows after each activity. But on my it doesn't?
We have both adjusted our zones in both the watches and on Connect.
It can't be that I don't have a Fenix that keeps that info away right?
When I export my activities to Strava I get it.
And because my watch register both time and heart rate it should only be a matter of calculations.