IMPSSOIBLE the portal could just be leading to a different spot in the galaxy if he was in the marathon universe bungie would be making halo 4 not 343 and plus if hes fighting "marathon people" 343 doesnt have rights to that all of you guys who think its in marathon universe are idiots halo is in the milky way just way into the future cuz thers earth and in halo ce campaign on TaR(truth and reconcealiation) and if bungie is making a new marathon they can only have halo easter eggs or they will get sued either way impossible