AA 1943 then AS 603 at Phoenix
Orlando → Phoenix → Seattle
Timetable, Phoenix time
08:57AA 1943 from Orlando at the gate
09:03AS 603 to Seattle leaves the gate
6 min apart on the timetable
The last days
AA 1943 and AS 603 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.