AA 4367 then UA 5673 at O'Hare
Des Moines → Chicago → Oklahoma City
Timetable, Chicago time
09:10AA 4367 from Des Moines at the gate
08:50UA 5673 to Oklahoma City leaves the gate
23 h 40 apart on the timetable, overnight
UA 5673 leaves 23 h 40 after AA 4367 arrives on the timetable: more than half a day, so not a connection we count.