Oshkosh and Hamilton coaches should push Kaul and Kosgei to face off at Nats in the 5k. It would be like Leer and Symmonds dodging each other a few years back, or Yuot and Moen. If either of them ever complain about lack of competition, then they arent taking advantage of a possible great showdown. Kaul is in excellent shape. I still think Kosgei would beat him in a 5k, but they need to race eachother finally.
Cross Country doesnt count. Kaul ran for second.