DL 5641 then B6 2185 at Boston
Cleveland → Boston → Pittsburgh
Timetable, Boston time
20:00DL 5641 from Cleveland at the gate
17:55B6 2185 to Pittsburgh leaves the gate
21 h 55 apart on the timetable, overnight
B6 2185 leaves 21 h 55 after DL 5641 arrives on the timetable: more than half a day, so not a connection we count.