AA 9909 then UA 5468 at O'Hare
Waterloo → Chicago → Wichita
Timetable, Chicago time
17:10AA 9909 from Waterloo at the gate
12:29UA 5468 to Wichita leaves the gate
19 h 19 apart on the timetable, overnight
UA 5468 leaves 19 h 19 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.