UA 5191 then AA 2765 at Houston
Oklahoma City → Houston → Charlotte
Timetable, Houston time
09:30UA 5191 from Oklahoma City at the gate
07:25AA 2765 to Charlotte leaves the gate
21 h 55 apart on the timetable, overnight
AA 2765 leaves 21 h 55 after UA 5191 arrives on the timetable: more than half a day, so not a connection we count.