Using Venu 3 to broadcast heart rate to my Wahoo Bolt V2 keeps disconnecting...

I'm using the Venu 3 to broadcast the heart rate to my Wahoo bolt V2 during cycling.

I believe it should be using ANT+, but in my Wahoo it shows as BLE for some reason. How is the Venu 3 really broadcasting?

So the issue is that every 60s, the broadcast stops on its down, and I have to go on the Venu 3 and press the start broadcast button again. Why is it stopping on its own?