DL 2629 then DL 2398 at Atlanta
Montréal → Atlanta → New York JFK
Timetable, Atlanta time
17:41DL 2629 from Montréal at the gate
15:16DL 2398 to New York JFK leaves the gate
21 h 35 apart on the timetable, overnight
DL 2398 leaves 21 h 35 after DL 2629 arrives on the timetable: more than half a day, so not a connection we count.