DL 5614 then B6 733 at Boston
Milwaukee → Boston → San Francisco
Timetable, Boston time
17:53DL 5614 from Milwaukee at the gate
15:50B6 733 to San Francisco leaves the gate
21 h 57 apart on the timetable, overnight
B6 733 leaves 21 h 57 after DL 5614 arrives on the timetable: more than half a day, so not a connection we count.