JL 6780 then ET 673 at Narita
Dalian → Tokyo → Seoul
Timetable, Tokyo time
19:10JL 6780 from Dalian at the gate
20:30ET 673 to Seoul leaves the gate
1 h 20 apart on the timetable
The last days
JL 6780 and ET 673 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.