Can someone cite specific PUBLISHED minimum connect times for DL at ATL? This data clearly exists somewhere as airlines/CRSs need it to build itineraries.

This is a very frustrating thread. Tons of anecdotal "xx minutes is fine" or "yy minutes is too tight" responses. We've had a few posters throw out numbers like 30, 35 or 55 minutes for MCT without any documentation of the source.

FWIW, I just called DL trying to book a 45 minute D-D connection at ATL (I don't care if this is "plenty of time" or "too tight"). The agent refused to book citing a 55 minute MCT but said that "exceptions apply" and was unable to shed any light on what those exceptions might be. I suspect based on what I know about other airlines at other hubs that an online D-D connection is likely to be an exception (shorter MCT) and we know that DL regularly does sell ATL D-D connections < 0h55 so the question remains:

Where are official Delta MCTs published?