I can attest that this works. I did this for my headphones and keyboard/mouse until I plugged the keyboard into my work mac with the USB cable to charge. I didn

I can attest that this works. I did this for my headphones and keyboard/mouse until I plugged the keyboard into my work mac with the USB cable to charge. I didn’t know that Apple sees this and creates the connection via Bluetooth (Yes used a spare Magic Keyboard). I had no desire to to the whole setup again and now have a cable keyboard and a KVM setup.