Can you connect to bangle without the gadgetbridge app

i have a bangle.js 2, and the gadgetbridge app is kinda janky. could i just make the bangle broadcast its measured heart rate over bluetooth or something? is there another way to not use the gadgetbridge app?
(although given how bad the heart rate algorithms are idk if i should bother - it says i have 40 bpm lol)

Looked at the wearable API docs. Do I have to implement every intent? Because some might require a lot of work, and I don’t use the alarm stuff myself.

Just pushed the custom app I made, I haven’t tried sleeping with it yet but it does work in my tests