AA 889 then AA 891 at Charlotte
Boston → Charlotte → Philadelphia
Timetable, Charlotte time
17:24AA 889 from Boston at the gate
18:04AA 891 to Philadelphia leaves the gate
40 min apart on the timetable
The last days
AA 889 and AA 891 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.