Vector 3s on Spinning bike

Hi,

I know that Vector 3 pedals connect to Zwift and I'm primarily considering them for that   but I'm confused about how they'd work with other indoor cycling.  I currently track spinning sessions via a Vivoactive 3 plus a cadence sensor and then view all the data in Garmin Connect.  I don't necessarily need live data during the activity so could Vector pedals be used in a similar way to what I'm using now?  To be clear, I don't have a Garmin Edge of any description and I can't find and info about getting the data from the pedals to the Connect app other than through Edge (or via 3rd parties like Zwift).

Thanks