So long as they are not too different in size and of a gentile temperment the should get along OK, especially if they are raised together. I have seven EEs, a cuckoo Marans, one Black Australorp and a RIR (who is surprisingly docile for her species) and other than a bit of "pecking order" squabbles at the breakfast table there's no friction.
A BA & A BR cuddled up together dust bathing.
I wish I had a picture or video of it.