DL 113 then B6 733 at Boston
Rome → Boston → San Francisco
Timetable, Boston time
14:31DL 113 from Rome at the gate
13:30B6 733 to San Francisco leaves the gate
22 h 59 apart on the timetable, overnight
B6 733 leaves 22 h 59 after DL 113 arrives on the timetable: more than half a day, so not a connection we count.