B6 2184 then DL 1655 at Boston
Raleigh-Durham → Boston → San Francisco
Timetable, Boston time
17:05B6 2184 from Raleigh-Durham at the gate
16:50DL 1655 to San Francisco leaves the gate
23 h 45 apart on the timetable, overnight
DL 1655 leaves 23 h 45 after B6 2184 arrives on the timetable: more than half a day, so not a connection we count.