AA 3546 then DL 4010 at Detroit
Chicago O'Hare → Detroit → Lexington
Timetable, Detroit time
09:27AA 3546 from Chicago O'Hare at the gate
08:25DL 4010 to Lexington leaves the gate
22 h 58 apart on the timetable, overnight
DL 4010 leaves 22 h 58 after AA 3546 arrives on the timetable: more than half a day, so not a connection we count.