B6 690 then DL 5704 at Boston
Fort Lauderdale → Boston → Washington National
Timetable, Boston time
09:13B6 690 from Fort Lauderdale at the gate
21:45DL 5704 to Washington National leaves the gate
12 h 32 apart on the timetable
DL 5704 leaves 12 h 32 after B6 690 arrives on the timetable: more than half a day, so not a connection we count.