DL 5680 then B6 451 at Boston
Pittsburgh → Boston → Orlando
Timetable, Boston time
21:00DL 5680 from Pittsburgh at the gate
20:35B6 451 to Orlando leaves the gate
23 h 35 apart on the timetable, overnight
B6 451 leaves 23 h 35 after DL 5680 arrives on the timetable: more than half a day, so not a connection we count.