AA 707 then WN 746 at Seattle
Dallas-Fort Worth → Seattle → Denver
Timetable, Seattle time
09:37AA 707 from Dallas-Fort Worth at the gate
13:05WN 746 to Denver leaves the gate
3 h 28 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
AA 707 and WN 746 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.