DL 5703 then B6 1155 at Boston
Baltimore → Boston → Washington National
Timetable, Boston time
10:41DL 5703 from Baltimore at the gate
10:34B6 1155 to Washington National leaves the gate
23 h 53 apart on the timetable, overnight
B6 1155 leaves 23 h 53 after DL 5703 arrives on the timetable: more than half a day, so not a connection we count.