AA 3739 then K4 221 at O'Hare
Omaha → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
14:12AA 3739 from Omaha at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
20 h 23 apart on the timetable, overnight
K4 221 leaves 20 h 23 after AA 3739 arrives on the timetable: more than half a day, so not a connection we count.