Going on 1 hour now!

Apparently I posted my “problem” in the wrong place,
trying to load a split screen co-op game for about 1 hr
now and we can’t get past the “loading” screen.
Before this 1 hour waiting period we tried to quit
completely and reload from scratch but nothing seems
to help we did that 3x before deciding to just “wait it out”
but like a thunderstorm that NEVER ends neither does
this loading screen. Why is it doing this? Can anyone
lend us some advice?

343 rebuttal is loading . . .

Just want to clarify, love Halo! MCC is great when it works
Don’t want a “refund” just want to enjoy some co-op with
my loved one!

Well, this sorta happened to me. I wanted to play a co-op split screen but loaded it on a level I played solo and it got stuck loading, I had to quit mcc and load a new level that wasn’t solo. Try this, go to the mission and DO NOT CONTINUE YOU SOLO GAME go to the levels and spin up the desired level and it will ask you if you want to continue select yes.