AA 4777 then AA 889 at Boston
New York LaGuardia → Boston → Charlotte
Timetable, Boston time
10:58AA 4777 from New York LaGuardia at the gate
14:54AA 889 to Charlotte leaves the gate
3 h 56 apart on the timetable
Boston’s board gives an arrival time for only about 59% of its flights, so many days show no gate time.
The last days
AA 4777 and AA 889 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.