AA 3683 then K4 221 at O'Hare
Bangor → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
20:09AA 3683 from Bangor at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
14 h 26 apart on the timetable, overnight
K4 221 leaves 14 h 26 after AA 3683 arrives on the timetable: more than half a day, so not a connection we count.