UA 1970 then AA 166 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
13:34AA 166 to New York JFK leaves the gatealso QF 3211, BA 5604
15 h 49 apart on the timetable, overnight
AA 166 leaves 15 h 49 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.