DL 2879 then K4 221 at O'Hare
Atlanta → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
19:05DL 2879 from Atlanta at the gate
16:20K4 221 to Cincinnati Northern Kentucky leaves the gate
21 h 15 apart on the timetable, overnight
K4 221 leaves 21 h 15 after DL 2879 arrives on the timetable: more than half a day, so not a connection we count.