DL 3869 then DL 5869 at Detroit
Elmira → Detroit → Pittsburgh
Timetable, Detroit time
15:11DL 3869 from Elmira at the gate
15:00DL 5869 to Pittsburgh leaves the gate
23 h 49 apart on the timetable, overnight
DL 5869 leaves 23 h 49 after DL 3869 arrives on the timetable: more than half a day, so not a connection we count.