AA 597 then 5Y 8529 at O'Hare
San Francisco → Chicago → Seoul
Timetable, Chicago time
23:55AA 597 from San Francisco at the gate
06:255Y 8529 to Seoul leaves the gate
6 h 30 apart on the timetable, overnight
The last days
AA 597 and 5Y 8529 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.