SQ 1460 then UA 930 at San Francisco
New York JFK → San Francisco → London
Timetable, San Francisco time
21:37SQ 1460 from New York JFK at the gate
16:40UA 930 to London leaves the gatealso LX 3049, AC 5376, OS 7858, SN 9100, LH 9379
19 h 03 apart on the timetable, overnight
UA 930 leaves 19 h 03 after SQ 1460 arrives on the timetable: more than half a day, so not a connection we count.