AA 6486 then AA 3564 at O'Hare
Detroit → Chicago → Roanoke
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
13:29AA 3564 to Roanoke leaves the gate
20 h apart on the timetable, overnight
AA 3564 leaves 20 h after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.