I was troubleshooting Bluetooth connection today and I thought that this is somehow related to software (PipeWire, bluez, bluetoothd and all that stuff). But no. Apparently Bluetooth barely works when WiFi antenna is disconnected from my ASUS motherboard.
Anyway, this might save a lot of time for someone, so I’m posting it here.
Most of the time Bluetooth and Wifi are provided by the same chip. Bluetooth runs on 2.4GHz, like WiFi up to N-band.
Edit: I’m too slow, looks like!