DL 5680 then B6 251 at Boston
Pittsburgh → Boston → Orlando
Timetable, Boston time
20:47DL 5680 from Pittsburgh at the gate
19:35B6 251 to Orlando leaves the gate
22 h 48 apart on the timetable, overnight
B6 251 leaves 22 h 48 after DL 5680 arrives on the timetable: more than half a day, so not a connection we count.