DL 2570 then DL 3965 at O'Hare
Boston → Chicago → Minneapolis
Timetable, Chicago time
09:35DL 2570 from Boston at the gate
17:30DL 3965 to Minneapolis leaves the gate
7 h 55 apart on the timetable
The last days
DL 2570 and DL 3965 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.