AA 3139 then AA 6000 at Charlotte
Philadelphia → Charlotte → Huntsville
Timetable, Charlotte time
07:52AA 3139 from Philadelphia at the gate
12:30AA 6000 to Huntsville leaves the gate
4 h 38 apart on the timetable
The last days
AA 3139 and AA 6000 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.