DL 1223 then KE 36 at Atlanta
Cincinnati → Atlanta → Seoul
Timetable, Atlanta time
16:33DL 1223 from Cincinnati at the gate
12:25KE 36 to Seoul leaves the gate
19 h 52 apart on the timetable, overnight
KE 36 leaves 19 h 52 after DL 1223 arrives on the timetable: more than half a day, so not a connection we count.