I have a Nyon computer on my Trek Rail 7. It connect readily to my iPhone over bluetooth when I turn it on, and at the same time puts my Apple Watch Ultra into HRM mode, but it doesn't display the actual heart rate on the Nyon screen. Everything is set up between Nyon, iPhone, and the Apple fitness app, but maybe I missed something. This ability is due to a relatively recent software upgrade and associated instructions are, well....none. Have any of you been able to monitor heart rate from your Apple Watch on your Nyon computer?