DL 514 then AM 615 at Phoenix
Boston → Phoenix → Mexico City
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
14:13AM 615 to Mexico City leaves the gate
16 h 20 apart on the timetable, overnight
AM 615 leaves 16 h 20 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.