DL 6050 then B6 1603 at JFK
São Paulo → New York → San Juan
Timetable, New York time
06:45DL 6050 from São Paulo at the gate
19:30B6 1603 to San Juan leaves the gate
12 h 45 apart on the timetable
B6 1603 leaves 12 h 45 after DL 6050 arrives on the timetable: more than half a day, so not a connection we count.