AA 9909 then UA 2668 at O'Hare
Waterloo → Chicago → Washington National
Timetable, Chicago time
17:10AA 9909 from Waterloo at the gate
11:05UA 2668 to Washington National leaves the gate
17 h 55 apart on the timetable, overnight
UA 2668 leaves 17 h 55 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.