AM 640 then DL 5702 at Boston
Mexico City → Boston → New York JFK
Timetable, Boston time
20:26AM 640 from Mexico City at the gate
19:30DL 5702 to New York JFK leaves the gate
23 h 04 apart on the timetable, overnight
DL 5702 leaves 23 h 04 after AM 640 arrives on the timetable: more than half a day, so not a connection we count.