AA 6331 then UA 5673 at O'Hare
Burlington (BTV) → Chicago → Oklahoma City
Timetable, Chicago time
08:59AA 6331 from Burlington (BTV) at the gate
08:50UA 5673 to Oklahoma City leaves the gate
23 h 51 apart on the timetable, overnight
UA 5673 leaves 23 h 51 after AA 6331 arrives on the timetable: more than half a day, so not a connection we count.