I successfully paired, connected and used my Jabra 75ts with the Mi Box S and when I was done I wanted to disconnect it, but there is no option in the bluetooth menu on the Mi Box S to do so, I can either “Change Name” or “Unpair”. This is pretty dumb imo since I have to unpair and then pair my headphones again and again whenever I want to use them on the TV. There was another post on this last year, but there was no solution or workaround mentioned in that post unfortunately !
I just turn off my JBL headset and when i turn it on it auto reconnect.
My JBL will switch automatically between my phone and Shield. It depends on what device is playing audio