AA 3821 then AA 2113 at DFW
Tulsa → Dallas-Fort Worth → Boston
Timetable, Dallas-Fort Worth time
06:20AA 3821 from Tulsa at the gate
10:00AA 2113 to Boston leaves the gate
3 h 40 apart on the timetable
The last days
AA 3821 and AA 2113 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.