I recently had the opposite experience. I was flying from BWI to MEM via Charlotte (which is what I get for buying tickets last minute.) MEM->CTL was delayed somewhat, leaving me with approximately 2 minutes to get from one terminal to another far away terminal.

I naturally didn't make the flight. While they were more than happy to accomodate me and get me onto the next CTL->BWI flight, I was worried about what was going to happen to my luggage, though it somehow beat me there.