DL 4020 then 4N 570 at Vancouver
Seattle (SEA) → Vancouver → Whitehorse
Timetable, Vancouver time
13:23DL 4020 from Seattle (SEA) at the gate
19:154N 570 to Whitehorse leaves the gate
5 h 52 apart on the timetable
The last days
DL 4020 and 4N 570 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.