AA 6486 then AA 531 at O'Hare
Detroit → Chicago → Dallas-Fort Worth
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
13:44AA 531 to Dallas-Fort Worth leaves the gate
20 h 15 apart on the timetable, overnight
AA 531 leaves 20 h 15 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.