DL 5680 then B6 333 at Boston
Pittsburgh → Boston → San Francisco
Timetable, Boston time
20:47DL 5680 from Pittsburgh at the gate
20:40B6 333 to San Francisco leaves the gate
23 h 53 apart on the timetable, overnight
B6 333 leaves 23 h 53 after DL 5680 arrives on the timetable: more than half a day, so not a connection we count.