WN 2147 then AS 538 at Seattle
Oakland → Seattle → Chicago O'Hare
Timetable, Seattle time
15:50WN 2147 from Oakland at the gate
17:51AS 538 to Chicago O'Hare leaves the gate
2 h 01 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
WN 2147 and AS 538 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.