AA 9909 then UA 664 at O'Hare
Waterloo → Chicago → Kansas City
Timetable, Chicago time
17:10AA 9909 from Waterloo at the gate
15:49UA 664 to Kansas City leaves the gate
22 h 39 apart on the timetable, overnight
UA 664 leaves 22 h 39 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.