Originally Posted by
Yaatri
Having an IT account will do nothing to help you redeem DL miles. The inventory you see on IT's website is not necessarily what's made available to DL.
It would a guideline. In general i have noticed that when an airline releases a seat to its members, it will release to others as well. There are several exceptions (SQ?) where the airline wants to give its members more opportunities to redeem and so may allow awards to its members and not others.
At a minimum if an airline does not release seats to its members then it won't release seats to its partners. One strange exception is CX where I saw its members not being able to get a particular flight, but I was able to get it with AA miles.