This depends on your specific TV. Some televisions support dual audio output devices while others do not. One way around this is to purchase the Wear & Hear “Harmony Bundle” which includes two headsets and one HearLink. Both you and the other person will then be able to hear the TV without ambient noise and optimized for your own hearing (while staying aware of important sounds, and able to speak to and hear one another).
Here is more information about the bundle: https://wearandhear.com/product/hearing-harmony-bundle/
