There is one big, bright source behind them, motivated as the projection. In the two-shot, there is a cyan source in the table, which looks like it's mostly providing exposure for the things on the table and the two character's arms. It
might be providing an exposure on Deckard & Bryant's faces, but I would be surprised if there wasn't another source (or more) at play providing the exposure on the faces. There's also a blue source providing exposure on the two men's bodies, as well as the wall.
In Bryant's CU, the back source appears to have moved around so it's hitting him a little more as a back 3/4 light, rather than a direct side-light. The blue light that was playing more so on his body now also plays on his face. It appears to be pretty '3/4 front-ey' and coming from just underneath (i.e. angled up at him). In Deckard's CU, the back source is in a different position, now back to more of a direct backlight, as per the two. Deckard has the same 3/4 front-ey blue source playing on his face as well.
There’s a haze, plus smoke - it feels like there’s a cigarette on the table.
There’s also a source directly in front of them that’s playing in their eyes and nothing else. This appears to be standing-in for the screen/projection.
Scene here: