UA 1970 then B6 416 at San Francisco
Cleveland → San Francisco → New York JFK
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
14:55B6 416 to New York JFK leaves the gatealso SQ 1548
17 h 10 apart on the timetable, overnight
B6 416 leaves 17 h 10 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.