AA 2876 then WN 683 at Seattle
Spokane → Seattle → Las Vegas
Timetable, Seattle time
01:09AA 2876 from Spokane at the gate
12:05WN 683 to Las Vegas leaves the gate
10 h 56 apart on the timetable
Seattle’s board gives a departure time for only about 57% of its flights, so many days show no gate time.
The last days
AA 2876 and WN 683 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.