On Saturday I took the plunge and upgraded my Fenix 3 to a Fenix 5. All seems to be working fine and I'm happy with the watch so far.
On Sunday I went on a ~7 hour bike ride using my Edge 810 and a standard HR chest strap leaving the Fenix 5 at home. What I was hoping to see when I got back was integration of the two HR measurements in GC. What I saw was just the reading from the Fenix 5 with a 7 hour hole in the middle (see attachments).
Now when I had the Fenix 3 (not HR) I would see the ride (Edge 810) heart rate in the heart rate dashboard. Now I only see the Fenix 5 HR. As Garmin has both of the measurements I should be seeing the two measurement amalgamated? Also the same is happening in the connect mobile app.