DL 1187 then DL 5875 at Boston
Detroit → Boston → Pittsburgh
Timetable, Boston time
23:54DL 1187 from Detroit at the gate
15:00DL 5875 to Pittsburgh leaves the gate
15 h 06 apart on the timetable, overnight
DL 5875 leaves 15 h 06 after DL 1187 arrives on the timetable: more than half a day, so not a connection we count.