Fenix 5+ won't detect HR on Bose SoundSport Pulse anymore

I used to be able to pair the HR on my SoundSport Pulse. I've reset the headphones, removed the device, and tried pairing again. The headphones connect, however the HR isn't being picked up by the watch. Other devices pick up the HR just fine. I believe the last time I ran with the headphones was in May and used the HR. Has anyone been able to connect it successfully?