AA 715 then AA 2174 at Charlotte
Nashville → Charlotte → Denver
Timetable, Charlotte time
12:40AA 715 from Nashville at the gate
13:35AA 2174 to Denver leaves the gate
55 min apart on the timetable
The last days
AA 715 and AA 2174 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.