WN 570 then AA 1653 at Boston
St Louis → Boston → Phoenix
Timetable, Boston time
09:30WN 570 from St Louis at the gate
10:12AA 1653 to Phoenix leaves the gate
42 min apart on the timetable
The last days
WN 570 and AA 1653 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.