I am I corporate sales for DL. The revenue numbers for corporate travel booked through travel agencies is in the billions. And those companies have the ability to prioritize DL in Concur potentially moving hundreds of thousands of dollars to DL which is why corporate clients are getting a little bump.

The new priority uses a corporate ticket as a tie breaker. DM on a V fare with the corporate ticket will go above a DM on a V fare booked without the corporate ticket. It comes after status, fare class, and CC, it's the 4th tie breaker just before check in time. Its poorly worded but not that complex.