It actually makes a lot of sense. It's very often that come nationals time the top individual on a championship team runs a safe race. This obviously limits his odds of winning a title/getting the best place possible.
It's not like Ahmed will be out there on a tempo, but surely they won't want to risk him blowing up by chasing a few guys that are way better than him.
He and Darling will probably run the first half together before Ahmed attempts to run down the rest of the field. Surely he'll be top 10.
The individuals can risk all they want.