B6 948 then DL 1414 at JFK
Las Vegas → New York → Fort Lauderdale
Timetable, New York time
06:59B6 948 from Las Vegas at the gate
19:55DL 1414 to Fort Lauderdale leaves the gate
12 h 56 apart on the timetable
DL 1414 leaves 12 h 56 after B6 948 arrives on the timetable: more than half a day, so not a connection we count.