B6 316 then DL 709 at JFK
San Francisco → New York → San Diego
Timetable, New York time
17:39B6 316 from San Francisco at the gate
17:30DL 709 to San Diego leaves the gate
23 h 51 apart on the timetable, overnight
DL 709 leaves 23 h 51 after B6 316 arrives on the timetable: more than half a day, so not a connection we count.