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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[quote][b]Posted by:[/b] ROFL Wolf1254 [quote][b]Posted by:[/b] crispychicken49 The theory where Master Chief went threw the portal and wounded up in the Marathon Universe, where he is the main Protagonist. That was an insane theory![/quote] Oh god I remember that thread. I swear, the OP of that thread really did do his research, even if it was wrong it made some sense![/quote] That was probably the scariest part about it! For a while I actually believed it!