DL 2439 then DL 4010 at Detroit
Nashville → Detroit → Lexington
Timetable, Detroit time
08:45DL 2439 from Nashville at the gate
08:25DL 4010 to Lexington leaves the gate
23 h 40 apart on the timetable, overnight
DL 4010 leaves 23 h 40 after DL 2439 arrives on the timetable: more than half a day, so not a connection we count.