DL 587 then DL 2398 at Atlanta
Mexico City → Atlanta → New York JFK
Timetable, Atlanta time
18:28DL 587 from Mexico City at the gate
15:16DL 2398 to New York JFK leaves the gate
20 h 48 apart on the timetable, overnight
DL 2398 leaves 20 h 48 after DL 587 arrives on the timetable: more than half a day, so not a connection we count.