AA 3987 then AA 1909 at Charlotte
Springfield → Charlotte → Richmond
Timetable, Charlotte time
15:09AA 3987 from Springfield at the gate
18:12AA 1909 to Richmond leaves the gate
3 h 03 apart on the timetable
The last days
AA 3987 and AA 1909 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.