AA 3571 then K4 221 at O'Hare
Springfield Branson National → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
19:25AA 3571 from Springfield Branson National at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
15 h 10 apart on the timetable, overnight
K4 221 leaves 15 h 10 after AA 3571 arrives on the timetable: more than half a day, so not a connection we count.