As for me, I remember way back earlier in Reach forums when people were discussing the time travel theory: A theory that linked the Halo 3 legendary ending to him possibly traveling back in to planet reach during the fall.
[Edited on 10.05.2012 8:25 PM PDT]
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Halo 2 would have 164 player games. As ridiculous as that sounds. It was a rumor that gained a lot of momentum