Dual active audio outputs on LG TV?

[Paul Meyer]

I have a hearing loss and would like to listen to the TV through my Bluetooth headset while at the same time others in the room listen normally via sound bar.   We have a Samsung 2.1 sound bar/sub that is controlled through the LG TV via HDMI.   I also have a BT transmitter that has an optical audio-in that is paired with my BT headset, but the TV only lets me use one output method at a time.  I would like to find a way to use both HDMI-out and optical audio-out at the same time.   If the sound bar had an audio-out port on it, I would use that - but it does not.   The TV model is an LG 55lb7200.