AA 2843 then AA 4480 at O'Hare
Charlotte → Chicago → Louisville
Timetable, Chicago time
09:10AA 2843 from Charlotte at the gate
18:59AA 4480 to Louisville leaves the gate
9 h 49 apart on the timetable
The last days
AA 2843 and AA 4480 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.