DL 535 then DL 855 at Atlanta
Kahului → Atlanta → Boston
Timetable, Atlanta time
05:21DL 535 from Kahului at the gate
09:55DL 855 to Boston leaves the gate
4 h 34 apart on the timetable
The last days
DL 535 and DL 855 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.