UA 959 then AA 9908 at O'Hare
London → Chicago → Milwaukee
Timetable, Chicago time
13:45UA 959 from London at the gate
10:00AA 9908 to Milwaukee leaves the gate
20 h 15 apart on the timetable, overnight
AA 9908 leaves 20 h 15 after UA 959 arrives on the timetable: more than half a day, so not a connection we count.