AA 6486 then AA 4442 at O'Hare
Detroit → Chicago → Madison
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
13:25AA 4442 to Madison leaves the gate
19 h 56 apart on the timetable, overnight
AA 4442 leaves 19 h 56 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.