AA 2715 then AA 2909 at Charlotte
Boston → Charlotte → Hartford
Timetable, Charlotte time
09:39AA 2715 from Boston at the gate
15:54AA 2909 to Hartford leaves the gate
6 h 15 apart on the timetable
The last days
AA 2715 and AA 2909 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.