A friend and I just broke The Covenant while looking for anything Recon-armor related. :lol
I ended up triggering the "Revelation" area well before I was supposed to somehow. So that was kind of loaded before the lightbridge was activated. The Cortana effect AND the cutscene started overlapping eachother once we got inside. And after that, the letterbox stayed while we fought our way through the enemies. We could only see the targeting reticle, and the VERY top of our motion tracker. None of our followers were helping until way late into the fight. We went into the little rooms with Truth's holograms, and my friend could actually stand ON the chair, as if it were a solid object. And Truth's hologram model was pushed OUT of the chair. Our allies started ATTACKING the hologram. They pushed it into the wall, and just continued to beat it until the hologram's message stopped. :lol
We also got passed some pretty interesting barriers, and I got stuck under ground a few times. We completely bypassed the Scarab loading area, but ended up getting stuck in an area that was surrounded by death barriers. Approaching Halo 3 HIH style is fun...in co-op. Playing alone and doing what we did would be a total mess. So many deaths...