DL 1389 then DL 4010 at Detroit
Houston → Detroit → Lexington
Timetable, Detroit time
08:54DL 1389 from Houston at the gate
08:25DL 4010 to Lexington leaves the gate
23 h 31 apart on the timetable, overnight
DL 4010 leaves 23 h 31 after DL 1389 arrives on the timetable: more than half a day, so not a connection we count.