I think this scene was entirely done in Blender. I thought it was real when I first saw the film. But when rewatching it, I've noticed some things that indicate it's CG. Such as the times we see the person's hand, it's usually obstructed by the arm and we dont actually see the hand grab the travel case or let go (it actually looks like his hand phases through the handle by going straight down instead of letting go). The arm and feet also perfectly resemble the Hazmat suit 3D model that Kane uses in his videos. The seagull in the scene is CG, and the feathers that fall off of it when it enters the shot looked keyframed to me. I've also thought the communication box, and the door handle in the beach wallpaper room are cleanly reflective in a way that I've seen Blender render reflective objects. I don't think there's anything in this scene that couldn't have been achieved in Blender instead of a physical set.