UA 2492 then SQ 1491 at San Francisco
Los Angeles → San Francisco → New York JFK
Timetable, San Francisco time
07:30UA 2492 from Los Angeles at the gatealso NH 7357, VA 8059
22:56SQ 1491 to New York JFK leaves the gate
15 h 26 apart on the timetable
SQ 1491 leaves 15 h 26 after UA 2492 arrives on the timetable: more than half a day, so not a connection we count.