QF 3760 then DL 668 at San Francisco
San Diego → San Francisco → New York JFK
Timetable, San Francisco time
13:56QF 3760 from San Diego at the gate
11:50DL 668 to New York JFK leaves the gatealso UX 3429, LY 4440, VS 4762, LA 6225, KL 7260
21 h 54 apart on the timetable, overnight
DL 668 leaves 21 h 54 after QF 3760 arrives on the timetable: more than half a day, so not a connection we count.