Halo 2 Campaign Issue, Coop forced restart!

Hey guys, I was trying to play Halo 2 coop with a friend and whenever we die, the game restarts from checkpoint like the Iron Skull is on…we triple checked and had no skulls at all on. This is on legendary difficulty btw…is this intended to happen, or a is this a known bug??

somebody didn’t play Halo 2 back in the day, did they?..
it’s always been like that in Legendary, that way you can’t be cheap and just keep using one player as cannon fodder/infinite ammo pack

Another one of these? I swear 343 needs to put out a PSA to inform all the newbies what Halo was like back in 2004.