UA 5191 then 8C 3384 at Houston
Oklahoma City → Houston → Cincinnati
Timetable, Houston time
09:30UA 5191 from Oklahoma City at the gate
09:258C 3384 to Cincinnati leaves the gate
23 h 55 apart on the timetable, overnight
8C 3384 leaves 23 h 55 after UA 5191 arrives on the timetable: more than half a day, so not a connection we count.