Since the CO award reservation online engine can't access delta award seats I used NWA's and pulled up some standard award possibilities. I then rried to book award reservations on the phone with CO using onepass miles and was told that the DL flights were not available in the standard reward category. Went back to NWA and booked it online using worldperks miles as a standard award.

Anyone know if CO and NWA have access to different DL award availability?