WN 571 then DL 675 at Boston
Baltimore → Boston → Kansas City
Timetable, Boston time
08:40WN 571 from Baltimore at the gate
06:15DL 675 to Kansas City leaves the gate
21 h 35 apart on the timetable, overnight
DL 675 leaves 21 h 35 after WN 571 arrives on the timetable: more than half a day, so not a connection we count.