DL 5680 then B6 591 at Boston
Pittsburgh → Boston → Tampa
Timetable, Boston time
21:00DL 5680 from Pittsburgh at the gate
20:45B6 591 to Tampa leaves the gate
23 h 45 apart on the timetable, overnight
B6 591 leaves 23 h 45 after DL 5680 arrives on the timetable: more than half a day, so not a connection we count.