DL 5052 then B6 1603 at JFK
Charlotte → New York → San Juan
Timetable, New York time
12:40DL 5052 from Charlotte at the gate
12:00B6 1603 to San Juan leaves the gate
23 h 20 apart on the timetable, overnight
B6 1603 leaves 23 h 20 after DL 5052 arrives on the timetable: more than half a day, so not a connection we count.