UA 1795 then DL 2680 at Boston
Newark → Boston → Chicago O'Hare
Timetable, Boston time
07:43UA 1795 from Newark at the gate
13:40DL 2680 to Chicago O'Hare leaves the gate
5 h 57 apart on the timetable
The last days
UA 1795 and DL 2680 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.