AA 9909 then UA 4547 at O'Hare
Waterloo → Chicago → Birmingham (Alabama)
Timetable, Chicago time
17:10AA 9909 from Waterloo at the gate
15:41UA 4547 to Birmingham (Alabama) leaves the gate
22 h 31 apart on the timetable, overnight
UA 4547 leaves 22 h 31 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.