AA 6006 then AA 1155 at Charlotte
Huntsville → Charlotte → Boston
Timetable, Charlotte time
12:59AA 6006 from Huntsville at the gate
17:35AA 1155 to Boston leaves the gate
4 h 36 apart on the timetable
The last days
AA 6006 and AA 1155 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.