CK 625 then K4 221 at O'Hare
Seattle (SEA) → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
16:33CK 625 from Seattle (SEA) at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
18 h 02 apart on the timetable, overnight
K4 221 leaves 18 h 02 after CK 625 arrives on the timetable: more than half a day, so not a connection we count.