AA 4505 then AA 2184 at Boston
Washington National → Boston → Charlotte
Timetable, Boston time
10:48AA 4505 from Washington National at the gate
11:18AA 2184 to Charlotte leaves the gate
30 min apart on the timetable
The last days
AA 4505 and AA 2184 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.