As there is no chat available for this question I'll try it here. The privacy policy is (perhaps unsurprisingly) a bit vague on this point.
Does Garmin Connect share/sell (any) user data with/to Google or Facebook through one of the (6 in-app) trackers without explicitly connecting to them?
It is probably a bit hypocritical to want data driven advise from a company while maintaining privacy focused, but I just want to limit my data used for advertisement/profiling purposes where possible.