Heartrate of garmin venu 2 watch not visible in the tacx android app using tacx flux S

The heartrate of garmine venu 2 is not shown and recorded in the tacx app on android when doing an indoor ride on my tacx flux S.

Also if I broadcast the hearrate from the watch it is not picked up in the tacx app (not shown under 'other devices' in order to pair.

Starting an indoor ride on the watch records the heartbeat and some other stats but not all that are reported by tacx.

The connect app also does not seem to merge the recording from tacx and the indoor ride, so I end up with double counting if I save both.

I would expect a more seemingless integration of garmin and tacx smart products

Any suggestions to make it work?