If it wasn't for the watermark, you wouldn't be able to tell...
Discussion
Whoa. You really wouldn’t.
There are two separate scenes superimposed - outside the window and the reflection inside. It's hard to see either clearly.
It kind of reminds me of Jurassic Park, where the dinosaurs are mostly shown in darkness/partially obscured/offscreen.
It's very impressive, but I'm not yet convinced it can do a wide array of different scene types.