DL 571 then WN 1957 at Boston
San Diego → Boston → Baltimore
Timetable, Boston time
06:40DL 571 from San Diego at the gate
19:45WN 1957 to Baltimore leaves the gate
13 h 05 apart on the timetable
WN 1957 leaves 13 h 05 after DL 571 arrives on the timetable: more than half a day, so not a connection we count.