What you see here is the Liliane avatar speaking and floating in space, but inside the headset you see the avatar speaking and floating in the performance space. When you wear the headset, you can see the avatar and the physical set and the human actor. But in headset, I can only record the digital object.
This video shows what the physical set looked like and the actor in the space interacting with the avatar. The audience, looking through the device, can see the physical set, the actor and the avatar.