DL 5764 then AC 3046 at Newark
Boston → New York → Chicago
Timetable, New York time
08:00DL 5764 from Boston at the gate
15:30AC 3046 to Chicago leaves the gate
7 h 30 apart on the timetable
The last days
DL 5764 and AC 3046 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.