I don’t know if this tread has already been done, or the idea proven to be false or true yet.
A thought suddenly came to my mind (not sure how or why) about the Halo 4 “scanned” trailer. The way Didact walks from the distance towards Chief looks to me like a “hi, long time no see” kinda scene. What if the scanning part is from Halo 5 or the next game whatever it will be called.
The Didact seems to have some kind of power to “watch” Chief’s memories and you can see Cortana there screaming for John. That made me think that the scene happens after Halo 4.
And if it does, then maybe Chief will escape and damage his armor as seen in the desert trailer.
Am I making any sense?