Apple TV 4K + Kickr = no resistance change

First ride with my Apple TV 4K, paired through Zwift Companion, to get around the two bluetooth connection limit of the Apple TV. Got my Kickr, cadence and heart rate connected but when I started to ride I noticed my pedal resistance did no change with the terrain. Looking at my Kickr the bluetooth light was solid, not flashing, as it usually is.

Anything I am doing wrong?

You can pair direct with the Apple TV, because all the Kickr connections will just count as one, and your HRM is the second. Try that and see if it works properly.