AA 2907 then UA 5194 at O'Hare
New York JFK → Chicago → Sioux City
Timetable, Chicago time
09:05AA 2907 from New York JFK at the gate
00:00UA 5194 to Sioux City leaves the gate
14 h 55 apart on the timetable, overnight
UA 5194 leaves 14 h 55 after AA 2907 arrives on the timetable: more than half a day, so not a connection we count.