DL 1630 then DL 5712 at Detroit
Rochester → Detroit → Pittsburgh
Timetable, Detroit time
07:24DL 1630 from Rochester at the gate
10:30DL 5712 to Pittsburgh leaves the gate
3 h 06 apart on the timetable
The last days
DL 1630 and DL 5712 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.