Usually when implementing good or at least consistent design practices in developing websites and apps with at least one eye on user experience, developers adhere to a single standard units - for example time duration units. This is generally done to provide for a positive user experience, reduce user interaction errors, increase retention of time and such.
I noticed workout duration units in Garmins calendar are in the format of "HH:MM"
But just one click away over in the Garmin Coach Plans tab the exact same workout is shown as "XXX Minutes"
And it's left as an exercise for the user to detect the presence/absence of the ":" and to 'do the math' as it were.
So for example the calendar might show a "2:15" run but click once over to plans and you see the same run as "135 minutes".
Users being what we are - inconsistent usage of time duration units potentially facilitates users confusing durations like say "215 minutes" or wait, didn't I just see somewhere it was actually "an hour and thirty five minutes?" ... click click ... What? Wait?
I know Garmin isn't always consistent across platforms - but I would've hoped for consistence usage of units within say just the website.