F9 1596 then AC 8568 at Atlanta
Chicago O'Hare → Atlanta → Montréal
Timetable, Atlanta time
13:32F9 1596 from Chicago O'Hare at the gate
12:55AC 8568 to Montréal leaves the gate
23 h 23 apart on the timetable, overnight
AC 8568 leaves 23 h 23 after F9 1596 arrives on the timetable: more than half a day, so not a connection we count.