IWatch and Trainer Road

Is there anyway to connect the Heart Rate from my Apple iWatch to Trainer Road? Or zwift while we are at it. Peloton has an app that works well. I use Strava on it while mountain biking. When I train on my mountain bike I only have Heart Rate, so would like the connection between the two, ideally using the same measurement system.

I’ve heard that you can use a third-party app on your Apple Watch, like BlueHeart, to broadcast HR data.

I haven’t done this myself, but it might be worth trying!