AA 1981 then WN 188 at Phoenix
Austin → Phoenix → Denver
Timetable, Phoenix time
16:10AA 1981 from Austin at the gate
16:30WN 188 to Denver leaves the gate
20 min apart on the timetable
The last days
AA 1981 and WN 188 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.