AA 3354 then WN 3525 at Phoenix
Houston → Phoenix → St Louis
Timetable, Phoenix time
08:05AA 3354 from Houston at the gate
08:50WN 3525 to St Louis leaves the gate
45 min apart on the timetable
The last days
AA 3354 and WN 3525 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.