B6 134 then DL 5845 at Boston
San Francisco → Boston → Philadelphia
Timetable, Boston time
06:44B6 134 from San Francisco at the gate
06:40DL 5845 to Philadelphia leaves the gate
23 h 56 apart on the timetable, overnight
DL 5845 leaves 23 h 56 after B6 134 arrives on the timetable: more than half a day, so not a connection we count.