How to autoconnect to the Bluetooth Headphones

Everytime when CoreELEC powerd on , I have to perform below steps,
settings->CoreELEC->Bluetooth->Choose WH-1000XM2 and Connect whether I choose “Trust and Connect” or Pair for the first time connect to WH-1000XM2.
So how the WH-1000XM2 can autoconnect to CoreELEC after powered on, thx!

It’s a bit hit and miss.

One day I can switch mine on and it auto connects but I can then reboot immediately and have to connect manually.

I’ve tried all manner of apps and workarounds to get it to be 100% consistent but it’s just not the case and because it only takes a few clicks to connect, I happily live with it.

That’s strange I use an external bluetooth dongle on my Odroid N2 and a Amazon Fire TV bluetooth remote control and it never fails to connect on startup.

Could the problem be unique to audio devices or maybe unique to the bluetooth chipset used?

All of the above and more could well contribute.

Not sure if it would make a difference but I didn’t use the CoreELEC addon’s bluetooth page to initially connect my remote, I did it from the command line using bluetoothctl