I have the same issue with Q8 tv! The setting: Home > Settings > General > Accessibility > Multiple Audio Output. Allows use of Bluetooth headset and TV sound simultaneously, but NOT my Samsung sound bar with blue tooth headset at same time. My family would like to use the soundbar while I use the headset since I have mild hearing loss and family complains About the sound bar volume I Use. I hope Samsung can allow two external devices simultaneously.
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