AA 6486 then AA 4384 at O'Hare
Detroit → Chicago → Pensacola
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
11:32AA 4384 to Pensacola leaves the gate
18 h 03 apart on the timetable, overnight
AA 4384 leaves 18 h 03 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.