]what eventually works:
login to garmin => go to calendar => connect microsoft acct (personal (non-institutional) outlook)
=> publishing in ms to get URL => paste URL into gcal (updates slowly, est. once a day)
Note, it’s also possible to create new activities, like “tennis” & have these entered into the gcal too, creating a nice “activities diary” in the gcal.
linkstream2 microblog 