AA 642 then AA 3602 at O'Hare
Dallas-Fort Worth → Chicago → Montréal
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
08:08AA 3602 to Montréal leaves the gate
18 h 58 apart on the timetable, overnight
AA 3602 leaves 18 h 58 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.