AA 3415 then K4 221 at O'Hare
Moline → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
18:30AA 3415 from Moline at the gate
16:20K4 221 to Cincinnati Northern Kentucky leaves the gate
21 h 50 apart on the timetable, overnight
K4 221 leaves 21 h 50 after AA 3415 arrives on the timetable: more than half a day, so not a connection we count.