I’m sorry to tell you that A&E and the History Channel are part and parcel of the MSM, just like FOX is part and parcel of the MSM.
EVERYONE is part of the MSM, except for maybe the Blaze and America One. I still think A+E Networks could be convinced to carry the debate; they might think of it as a kind of reality TV ("let's look at the freaks on the right!") but the candidates would still get their respective messages out, and the Neilsons would shock the MSM.