I use MapMyFitness on my phone to track my workouts, it accepts tracking information from my Garmin.
And then the Health App on my phone uses MapMyFitness as a source of data.
With me so far?
So why - not that I’m too bothered - does the Health App then NOT get all the info that the Garmin provided?
For your amusement, I provide you with a screenshot of last Saturday when, according to said Health App, I only burned 72 calories even though it knows - on some level - that I ran 10K 🤣🤣🤣