Is it possible to tell from Garmin Connect whether the recorded HR data from a completed workout came from my heart monitor or the wrist monitor on more Forerunner 235?

At one point during the workout in question the watch said something about an ext. hr monitor being used but I would like to confirm that it was used the entire time. My max HR was higher than I've seen it for several years.

0 S.M.R. 2 months ago

You can contact Garmin support , they can confirm it. I had an issue recently and on contacting them they could confirm it remained connected through-out the activity. I used the support chat.