UA 2274 then DL 2112 at San Francisco
San Diego → San Francisco → New York JFK
Timetable, San Francisco time
09:20UA 2274 from San Diego at the gatealso AC 4193, AZ 4402, AZ 4510, NH 7317, VA 8437, NZ 9598
21:35DL 2112 to New York JFK leaves the gatealso AM 4443, VS 4856, KQ 7007
12 h 15 apart on the timetable
DL 2112 leaves 12 h 15 after UA 2274 arrives on the timetable: more than half a day, so not a connection we count.