I have noted in the cinema first look you can actually see a shot of blue team from inside the guardian (which is made obvious by the shape and architecture looks just like the guardian face just from the inside)
& a shot of chief after a fight with locke he has a crack in his visor ( I noted this is after lockes fight due to chief having the crack when its all dark night time and red when locke turns up and chief stands up from groundpound position, SO in turn if he had it then and he is now on a forerunner world in the picture that chief manages to out do locke and get away)
EDIT: My laptops not letting me upload the images to imgur. SO, here are the pause times.
0:31 BLUE TEAM INSIDE THE GUARDIAN
0:38 CHIEF CRACKED VISOR (POST FIGHT WITH LOCKE)
0:40 CHIEF CRACKED VISOR 2 (POST FIGHT WITH LOCKE)
1:06 LOCKE CONFRONTS CHIEF IN A DARK AND RED ENVIROMENT
1:45 CHIEF STANDS UP WITH BROKEN VISOR DARK AND RED ENVIROMENT (you may have to slow this down a little to see & look right next to chiefs left knee as he stands up to see)
EDIT:
AT 1:47 ON THE PLATFORM OSIRIS GET BLOWN OFF BY A DIGITAL ENTITY. COULD BE DIGIDACT OR WARDEN?!

Wow, these are really good.
Nice catch(es)
[Edit]: I’m not sure if Blue Team is inside the Guardian for sure.
Yes, that does look a lot like the head (I’ll give you that), but don’t get your hopes up as it could simply be a Forerunner room.
These are all great finds but I’m afraid some other user’s have beat you to it. Thanks for your hard work though I personally am super grateful for all of the more perceptive of us halo fans because I miss stuff like this all the time. 
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> These are all great finds but I’m afraid some other user’s have beat you to it. Thanks for your hard work though I personally am super grateful for all of the more perceptive of us halo fans because I miss stuff like this all the time. 
awh dang shame about being beat, I just hadn’t seen any post thats all plus i only just watched the video ^^.
if HALO was school work i’d have done so so much better at school XD. I love paying attention to halo!
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> Wow, these are really good.
> Nice catch(es)
>
> [Edit]: I’m not sure if Blue Team is inside the Guardian for sure.
> Yes, that does look a lot like the head (I’ll give you that), but don’t get your hopes up as it could simply be a Forerunner room.
indeed it could be, but due to the shape of it and even the way it looks like it has eyes im just betting it is :D, just my opinion thought i could easily be wrong
Those are some good eyes lol. Chief must crack his visor when he headbutts Locke or something like that.
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> Those are some good eyes lol. Chief must crack his visor when he headbutts Locke or something like that.
Yeah, I saw that in the leaked cinema clip but they took it out of this version for some reason.