DL 1715 then DL 668 at San Francisco
Los Angeles → San Francisco → New York JFK
Timetable, San Francisco time
13:52DL 1715 from Los Angeles at the gatealso SK 3630, AM 3785, LA 6420, WS 6875, AF 8877, CI 9169
11:50DL 668 to New York JFK leaves the gatealso UX 3429, LY 4440, VS 4762, LA 6225, KL 7260
21 h 58 apart on the timetable, overnight
DL 668 leaves 21 h 58 after DL 1715 arrives on the timetable: more than half a day, so not a connection we count.