F9 3242 then K4 221 at O'Hare
Dallas-Fort Worth → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
19:15F9 3242 from Dallas-Fort Worth at the gate
16:20K4 221 to Cincinnati Northern Kentucky leaves the gate
21 h 05 apart on the timetable, overnight
K4 221 leaves 21 h 05 after F9 3242 arrives on the timetable: more than half a day, so not a connection we count.