UA 641 then UA 6225 at Dulles
Atlanta (ATL) → Washington → Hartford
Timetable, Washington time
07:18UA 641 from Atlanta (ATL) at the gate
12:35UA 6225 to Hartford leaves the gate
5 h 17 apart on the timetable
The last days
UA 641 and UA 6225 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.