DL 2439 then DL 1627 at Detroit
Nashville → Detroit → Memphis
Timetable, Detroit time
08:45DL 2439 from Nashville at the gate
08:27DL 1627 to Memphis leaves the gate
23 h 42 apart on the timetable, overnight
DL 1627 leaves 23 h 42 after DL 2439 arrives on the timetable: more than half a day, so not a connection we count.