WN 1648 then AA 2096 at Boston
Kansas City → Boston → Philadelphia
Timetable, Boston time
12:25WN 1648 from Kansas City at the gate
12:56AA 2096 to Philadelphia leaves the gate
31 min apart on the timetable
The last days
WN 1648 and AA 2096 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.