Missing HR (using TR with Kickr Core and attempting to get HR via either Fenix 5 or Garmin ANT)

Hello. I finally got my Kickr Core set up and successfully paired it with TR, but I’m missing HR info. I have an old Garmin chest strap w/ANT stick and I also have a Fenix 5s. I’d ideally like to use TR on my Windows 11 laptop. What’s the best way to get my HR? I also have the TR app on my Android phone, but neither seem to recognize my Fenix or chest strap w/ANT. Should they? Thanks!