The other is total for a whole for a current activity in multisport session - triathlon, some other predefined sport mode sequence or when switching sport modes manually through menus. It’s one of those if-you-need-to-ask-you-can-ignore-it’s-existence things.
(e: fixed. apparently I’m not much of a morning person after all)
This seems to be a general issue on Suunto watches, I did not manage to get my TACX Neo Smart work with all data (power, cadence, speed, distance) on Ambit2, Ambit3 or S9B 😞
Works fine on Fenix6 and my Vantage V