Connect isn't showing any HR data from my Forerunner 645 Music since Thursday night, 3 days ago. I turned on Broadcast HR on Friday so I could record on my Edge 520, so I suspect I was experimenting on Thursday night to make sure I'd be able to use it instead of an HR strap.
I have since turned off broadcast, and I can see my real time HR on the Connect app, but it isn't recording/saving it.