AA 2767 then AA 5572 at Charlotte
Philadelphia → Charlotte → Lexington
Timetable, Charlotte time
10:35AA 2767 from Philadelphia at the gate
11:20AA 5572 to Lexington leaves the gate
45 min apart on the timetable
The last days
AA 2767 and AA 5572 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.