DL 1630 then AA 5003 at Detroit
Rochester → Detroit → Chicago O'Hare
Timetable, Detroit time
07:24DL 1630 from Rochester at the gate
11:29AA 5003 to Chicago O'Hare leaves the gate
4 h 05 apart on the timetable
The last days
DL 1630 and AA 5003 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.