DL 571 then DL 675 at Boston
San Diego → Boston → Kansas City
Timetable, Boston time
06:35DL 571 from San Diego at the gate
06:15DL 675 to Kansas City leaves the gate
23 h 40 apart on the timetable, overnight
DL 675 leaves 23 h 40 after DL 571 arrives on the timetable: more than half a day, so not a connection we count.