AA 9909 then UA 5984 at O'Hare
Waterloo → Chicago → Cleveland
Timetable, Chicago time
17:10AA 9909 from Waterloo at the gate
13:14UA 5984 to Cleveland leaves the gate
20 h 04 apart on the timetable, overnight
UA 5984 leaves 20 h 04 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.