AA 3236 then UA 5194 at O'Hare
Phoenix → Chicago → Sioux City
Timetable, Chicago time
05:00AA 3236 from Phoenix at the gate
00:00UA 5194 to Sioux City leaves the gate
19 h apart on the timetable, overnight
UA 5194 leaves 19 h after AA 3236 arrives on the timetable: more than half a day, so not a connection we count.