DL 1199 then KE 8232 at O'Hare
Atlanta → Chicago → Seoul
Timetable, Chicago time
23:54DL 1199 from Atlanta at the gate
09:00KE 8232 to Seoul leaves the gate
9 h 06 apart on the timetable, overnight
The last days
DL 1199 and KE 8232 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.