AA 2487 then AA 2306 at DFW
Kansas City → Dallas-Fort Worth → Boston
Timetable, Dallas-Fort Worth time
08:44AA 2487 from Kansas City at the gate
14:36AA 2306 to Boston leaves the gate
5 h 52 apart on the timetable
The last days
AA 2487 and AA 2306 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.