DL 9896 then DL 3739 at Seattle
Tokyo Haneda → Seattle → Eugene
Timetable, Seattle time
05:35DL 9896 from Tokyo Haneda at the gate
11:37DL 3739 to Eugene leaves the gate
6 h 02 apart on the timetable
Seattle’s board gives a departure time for only about 56% of its flights, so many days show no gate time.
The last days
DL 9896 and DL 3739 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.