AA 2633 then UA 5194 at O'Hare
Washington National → Chicago → Sioux City
Timetable, Chicago time
09:11AA 2633 from Washington National at the gate
00:00UA 5194 to Sioux City leaves the gate
14 h 49 apart on the timetable, overnight
UA 5194 leaves 14 h 49 after AA 2633 arrives on the timetable: more than half a day, so not a connection we count.