UA 4644 then YV 4012 at Detroit
Chicago O'Hare → Detroit → Houston
Timetable, Detroit time
17:10UA 4644 from Chicago O'Hare at the gate
16:45YV 4012 to Houston leaves the gate
23 h 35 apart on the timetable, overnight
YV 4012 leaves 23 h 35 after UA 4644 arrives on the timetable: more than half a day, so not a connection we count.