Even though Okafor/Noel is a better pairing than say Okafor/Embiid, I still don't think that pairing works together. Neither player can stretch the floor much, which creates spacing issues on offense. Also, stretch fours will be a problem for them to guard, because it would force Noel out farther on the perimeter, taking him away from his bread-and-butter of paint protection and leaving Okafor there instead. I think they're both 5's that can't play the 4 spot for major stretches, and they eventually have to trade one of them away.