OO 9909 then AA 1640 at O'Hare
Waterloo → Chicago → Phoenix
Timetable, Chicago time
16:47OO 9909 from Waterloo at the gate
13:26AA 1640 to Phoenix leaves the gate
20 h 39 apart on the timetable, overnight
AA 1640 leaves 20 h 39 after OO 9909 arrives on the timetable: more than half a day, so not a connection we count.