OO 225 then DL 3983 at O'Hare
Richmond → Chicago → Minneapolis
Timetable, Chicago time
11:48OO 225 from Richmond at the gate
12:30DL 3983 to Minneapolis leaves the gate
42 min apart on the timetable
The last days
OO 225 and DL 3983 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.