Recently I started to use again Vivosmart and I'm disappointed that nothing changed since years in Garmin connect. I use Fenix for running and I would like to use Vivosmart 24/7, but what happens is that when you use both same time you will see two activities recorded. So far so good, I can delete one (from Vivosmart), but it will not delete calories or activity minutes from daily summary. That should be fairly simple to handle, but it looks like the only way solve it is to leave band home going for running with Fenix.
There is one more to notice, cheast heart rate monitor which I consider as reference give me max heart rate of 170, Vivosmart optical 184 during same exercise. Disappointing!