AA 3965 then AA 2937 at Charlotte
Greensboro → Charlotte → St Louis
Timetable, Charlotte time
08:20AA 3965 from Greensboro at the gate
16:34AA 2937 to St Louis leaves the gate
8 h 14 apart on the timetable
The last days
AA 3965 and AA 2937 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.