UA 6123 then DL 5060 at Detroit
Houston → Detroit → Cincinnati
Timetable, Detroit time
16:04UA 6123 from Houston at the gate
15:55DL 5060 to Cincinnati leaves the gate
23 h 51 apart on the timetable, overnight
DL 5060 leaves 23 h 51 after UA 6123 arrives on the timetable: more than half a day, so not a connection we count.