BR 23 then NH 9416 at Taipei
Seattle → Taipei → Tokyo Narita
Timetable, Taipei time
04:40BR 23 from Seattle at the gate
15:27NH 9416 to Tokyo Narita leaves the gate
10 h 47 apart on the timetable
The last days
BR 23 and NH 9416 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.