UL 454 then NH 8402 at Narita
Colombo → Tokyo → Chicago
Timetable, Tokyo time
08:10UL 454 from Colombo at the gate
16:16NH 8402 to Chicago leaves the gate
8 h 06 apart on the timetable
The last days
UL 454 and NH 8402 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.