DL 1798 then DL 514 at Boston
Kansas City → Boston → Phoenix
Timetable, Boston time
17:05DL 1798 from Kansas City at the gate
08:35DL 514 to Phoenix leaves the gate
15 h 30 apart on the timetable, overnight
DL 514 leaves 15 h 30 after DL 1798 arrives on the timetable: more than half a day, so not a connection we count.