Lee - DK is looking for changes. Don't ask me why, I just smell it. That's why Reddan and Sexton are there together; it's the combination, with their own 8 and 12, so they have no excuses. One, or both, is being looked at to be cut.
BTW, Wallace is playing ahead of O'Brien. Cronin's a hooker. And far, far, far better than best. Like a new version of a certain baldy Limerick hooker (Cronin's one of ours, too). Best is being given as much rope as he need, too. And, I suspect, Ferris and Healy, too.