AA 4571 then K4 221 at O'Hare
Grand Rapids → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
14:48AA 4571 from Grand Rapids at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
19 h 47 apart on the timetable, overnight
K4 221 leaves 19 h 47 after AA 4571 arrives on the timetable: more than half a day, so not a connection we count.