AA 2600 then KE 232 at O'Hare
Boston → Chicago → Seoul
Timetable, Chicago time
12:33AA 2600 from Boston at the gate
19:00KE 232 to Seoul leaves the gate
6 h 27 apart on the timetable
The last days
AA 2600 and KE 232 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.