FX 304 then K4 221 at O'Hare
Memphis → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
18:39FX 304 from Memphis at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
15 h 56 apart on the timetable, overnight
K4 221 leaves 15 h 56 after FX 304 arrives on the timetable: more than half a day, so not a connection we count.