UA 336 then DL 2112 at San Francisco
Los Angeles → San Francisco → New York JFK
Timetable, San Francisco time
08:55UA 336 from Los Angeles at the gatealso NH 7355, VA 8056, NZ 9273
21:35DL 2112 to New York JFK leaves the gatealso AM 4443, VS 4856, KQ 7007
12 h 40 apart on the timetable
DL 2112 leaves 12 h 40 after UA 336 arrives on the timetable: more than half a day, so not a connection we count.