DL 4903 then OO 9908 at O'Hare
New York JFK → Chicago → Milwaukee
Timetable, Chicago time
09:27DL 4903 from New York JFK at the gate
12:00OO 9908 to Milwaukee leaves the gate
2 h 33 apart on the timetable
The last days
DL 4903 and OO 9908 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.