Interesting perspective. I'm not sure I'd be concerned about Halo being overshadowed. MCC is releasing in the prelude, we're supposed to get flighting of Infinite proper, and there's only really a maximum of four months after the reveal the game can actually drop and make a dent for the holiday season. There's going to be a lot of time spent on the new Xbox console and there's no way that the first Halo since the original to launch with said console isn't going to be a major part of that.

The X factor here is how much COVID is messing with everyone's plans and actual timetables, but there's nothing really there to speculate on in any informed way.