KE 2012 then RF 522 at Incheon
Hong Kong → Seoul → Cheongju
Timetable, Seoul time
05:20KE 2012 from Hong Kong at the gate
10:30RF 522 to Cheongju leaves the gate
5 h 10 apart on the timetable
Today
From the airport’s board at 13:21 Seoul time
05:10KE 2012 reached the gate10 min early
11:24RF 522 left the gate54 min late
6 h 14 between the gates
The last days
KE 2012 and RF 522 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.