DL 1389 then DL 1627 at Detroit
Houston → Detroit → Memphis
Timetable, Detroit time
08:49DL 1389 from Houston at the gate
08:27DL 1627 to Memphis leaves the gate
23 h 38 apart on the timetable, overnight
DL 1627 leaves 23 h 38 after DL 1389 arrives on the timetable: more than half a day, so not a connection we count.