UA 3549 then GB 397 at O'Hare
Montréal → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
18:46UA 3549 from Montréal at the gate
07:00GB 397 to Cincinnati Northern Kentucky leaves the gate
12 h 14 apart on the timetable, overnight
GB 397 leaves 12 h 14 after UA 3549 arrives on the timetable: more than half a day, so not a connection we count.