UA 335 then B6 316 at San Francisco
Eugene → San Francisco → New York JFK
Timetable, San Francisco time
08:40UA 335 from Eugene at the gatealso NZ 9173
08:05B6 316 to New York JFK leaves the gatealso LO 5774, EY 8328, AT 9559
23 h 25 apart on the timetable, overnight
B6 316 leaves 23 h 25 after UA 335 arrives on the timetable: more than half a day, so not a connection we count.