AA 3811 then K4 221 at O'Hare
Omaha → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
17:57AA 3811 from Omaha at the gate
16:20K4 221 to Cincinnati Northern Kentucky leaves the gate
22 h 23 apart on the timetable, overnight
K4 221 leaves 22 h 23 after AA 3811 arrives on the timetable: more than half a day, so not a connection we count.