Audio from Gemini

What do you mean by ‘separate?’

Hi, doo4usc44. The Gemini has a Digital Audio port that you can use to connect a sound system on the device's back panel. You can find more information about our latest Gemini device at the following link: https://www.directv.com/technology/gemini/ Thank you for contacting DIRECTV. Nicolas, DIRECTV Community Specialist

Is the audio from HDMI and OPTICAL

Yes, both the HDMI OUT and Optical Audio OUT provides a digital audio signal. What are you trying to do?

Wanted attach a hearing aid interface for aunt to hear! Had on on my old HR 44.

That can be tricky with a digital output because those hearing aid interfaces often don't support digital inputs. And, if it does have an optical digital input, you'll need to use 2-ch PCM Audio from the HR44, not Dolby Digital 5.1 audio. What does your interface have?

My Gemini has a grey plug in the optical port and I want to hook up some headphones.  Do I just need to pry out this plug?

Never heard of optical headphones, maybe adapter to Bluetooth headphones. The optical Jack could have a little door that pushes away for cord.

As a follow up.  I bought Insignia brand wireless headphones from Best Buy and plugged them into the optical point on the Gemini.  They work great.  What I though was a 'plug' on the optical port is just a little swinging door that the cable end just pushes aside.