AA 834 then WN 819 at Boston
Philadelphia → Boston → St Louis
Timetable, Boston time
23:54AA 834 from Philadelphia at the gate
05:20WN 819 to St Louis leaves the gate
5 h 26 apart on the timetable, overnight
The last days
AA 834 and WN 819 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.