AA 2344 then AA 1278 at Charlotte
St Louis → Charlotte → Baltimore
Timetable, Charlotte time
12:00AA 2344 from St Louis at the gate
16:54AA 1278 to Baltimore leaves the gate
4 h 54 apart on the timetable
The last days
AA 2344 and AA 1278 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.