AA 6501 then AA 435 at O'Hare
Nashville → Chicago → Oklahoma City
Timetable, Chicago time
08:35AA 6501 from Nashville at the gate
14:50AA 435 to Oklahoma City leaves the gate
6 h 15 apart on the timetable
The last days
AA 6501 and AA 435 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.