B6 419 then DL 9963 at Atlanta
New York JFK → Atlanta → Queretaro
Timetable, Atlanta time
17:32B6 419 from New York JFK at the gate
09:30DL 9963 to Queretaro leaves the gate
15 h 58 apart on the timetable, overnight
DL 9963 leaves 15 h 58 after B6 419 arrives on the timetable: more than half a day, so not a connection we count.