DL 3837 then DL 4010 at Detroit
South Bend → Detroit → Lexington
Timetable, Detroit time
09:30DL 3837 from South Bend at the gate
08:25DL 4010 to Lexington leaves the gate
22 h 55 apart on the timetable, overnight
DL 4010 leaves 22 h 55 after DL 3837 arrives on the timetable: more than half a day, so not a connection we count.