Adding my comment to this thread. Same thing here, my Garmin Edge (paired with Garmin HRM) reported 838 calories for my bike ride today, but Strava reported it as 425. Based on my effort involved t...
+1 for this request. Heart rate and calories burnt would be great to see synced from Strava to Apple health. I use a Garmin Edge as well and sync that data with Strava.