AA 1833 then AA 4218 at Seattle
Charlotte → Seattle → Phoenix
Timetable, Seattle time
09:58AA 1833 from Charlotte at the gate
18:23AA 4218 to Phoenix leaves the gate
8 h 25 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 1833 and AA 4218 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.