I signed up just to support this request.
I also would like to have the option to simultaneously output audio to the headphone port and via optical.
My TV is an OLED48CX9LB
I have analog stereo speakers connected to my TV via the analog headphone port and also have a connection to surround speakers via optical audio.
But I can not output audio to both at the same time, which my (very) old Samsung TV had an option for. (headphone + optical)
Right now I have to choose between "headphone (analog stereo speakers) + internal speakers" and "optical (surround) + internal speakers"
It would be very nice to have additional options like "headphone + optical" or even "headphone + optical + internal speakers".