DL 5731 then DL 5837 at Boston
Pittsburgh → Boston → Charlotte
Timetable, Boston time
18:44DL 5731 from Pittsburgh at the gate
17:30DL 5837 to Charlotte leaves the gate
22 h 46 apart on the timetable, overnight
DL 5837 leaves 22 h 46 after DL 5731 arrives on the timetable: more than half a day, so not a connection we count.