AA 2042 then AA 2279 at Miami
Nashville → Miami → Chicago O'Hare
Timetable, Miami time
10:57AA 2042 from Nashville at the gate
18:30AA 2279 to Chicago O'Hare leaves the gate
7 h 33 apart on the timetable
The last days
AA 2042 and AA 2279 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.