User blog comment:TheMegaShyGuy/Red vs. Blue Blood Gulch Chronicles Re-Remastered/@comment-1886172-20111019201913/@comment-30133540-20111020084249

No, it doesn't. It was confirmed various times. CEA just uses Reach's multiplayer.

"We didn't want to tell Reach fans "Oh, we're going to interrupt your experience and decimate your population and ecosystem because we have a new but old thing"

- Frank 'O' Conner (Take from Gameinformer; issue 223; November 2011)

There's a lot more then just that, but, that's the major thing I wanted to list. Though, the interview is much longer. Anyways, I'm just doing this to be an ass. :P