Most of this is speculative (except the first two images), but……
-Notice in the second image that is CLEARLY Adam Driver.-
I haven’t seen this comparison yet… but these could very well be the same shots. In the second image, the profile and hair are clearly Leia, especially if you watch this part closely in the actual trailer and stop it frame by frame.
Not only that but, Leia is looking in the same direction so it DOES MATCH up from a clearly shown shot in another part of the BTS reel - that this is Leia! (you can see her brow and cheek bones in the second image would match the angle she is turning her face in the top image) Her hair looks to be the same (you can see her hair in the second picture if you look closely)… The lighting even matches… I am gonna say it’s pretty solid evidence that Leia and Ben share this scene.
(as a side note, I WILL BAWL MY EYES OUT IN THEATERS if Leia Organa can reunite with her Ben. TEARS WILL BE SHED. CARRIE AND LEIA DESERVE THIS GODDAMMIT)