AA 1998 then AA 4104 at Phoenix
Seattle → Phoenix → Denver
Timetable, Phoenix time
10:24AA 1998 from Seattle at the gate
12:15AA 4104 to Denver leaves the gate
1 h 51 apart on the timetable
The last days
AA 1998 and AA 4104 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.