I think that, if you look through all the references, easter eggs, and downright dozens of connections of Marathon in Halo, I think we can assume a little bit of Bungie's intentions between those two games. All of the outrght in your face references and easter eggs were in H1, H2, and H3...and then seemingly absent from later Bungie Halo games. Irrevocable, core connections like MJOLNIR in both games and so and so forth couldn't be changed, but the other stuff was ommited. Bungie seperated from MS shortly after Halo 3's release. It is my theory Bungie fully intended for Marathon and Halo to be in the same Universe and exist together eventually, but once the final details were settled and they could not retain Halo. It was too late in the Halo 3 dev cycle to take out all the easter eggs, so they began in the later games. All the Marathonn symbols and such weren't there. As we know, Bungie still owns Marathon though. What I ponder upon, is if Bungie will incorporate Marathon with Destiny as they so wanted to do with Halo? What do you think? [Edited on 11.29.2012 6:11 PM PST]