That's what I meant with the reflection!
I figured the same, but hey, there's 1 more teaser left, and a "big one"/compilation. Dual could still come, although I HIGHLY doubt it. Just wanted to know if it was there already.
Chamber, I don't know, I'd say not. I think it's a cinematic effect, but it was the only thing I could find in that movie.
EDIT: this movie: