AA 3600 then UA 5191 at O'Hare
Montréal → Chicago → Lancaster
Timetable, Chicago time
14:10AA 3600 from Montréal at the gate
08:50UA 5191 to Lancaster leaves the gate
18 h 40 apart on the timetable, overnight
UA 5191 leaves 18 h 40 after AA 3600 arrives on the timetable: more than half a day, so not a connection we count.