AA 690 then WN 1424 at Philadelphia
Boston → Philadelphia → St Louis
Timetable, Philadelphia time
07:37AA 690 from Boston at the gate
14:45WN 1424 to St Louis leaves the gate
7 h 08 apart on the timetable
The last days
AA 690 and WN 1424 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.