AA 3854 then K4 221 at O'Hare
Rochester (RST) → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
17:59AA 3854 from Rochester (RST) at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
16 h 36 apart on the timetable, overnight
K4 221 leaves 16 h 36 after AA 3854 arrives on the timetable: more than half a day, so not a connection we count.