AA 9909 then UA 2164 at O'Hare
Waterloo → Chicago → Phoenix
Timetable, Chicago time
17:10AA 9909 from Waterloo at the gate
11:08UA 2164 to Phoenix leaves the gate
17 h 58 apart on the timetable, overnight
UA 2164 leaves 17 h 58 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.