DL 5232 then UA 6251 at Detroit
Memphis → Detroit → Houston
Timetable, Detroit time
20:50DL 5232 from Memphis at the gate
10:59UA 6251 to Houston leaves the gate
14 h 09 apart on the timetable, overnight
UA 6251 leaves 14 h 09 after DL 5232 arrives on the timetable: more than half a day, so not a connection we count.