DL 474 then WN 1717 at Boston
Seattle → Boston → Baltimore
Timetable, Boston time
21:50DL 474 from Seattle at the gate
11:45WN 1717 to Baltimore leaves the gate
13 h 55 apart on the timetable, overnight
WN 1717 leaves 13 h 55 after DL 474 arrives on the timetable: more than half a day, so not a connection we count.