TK 9588 then DL 668 at San Francisco
Portland (Oregon) → San Francisco → New York JFK
Timetable, San Francisco time
15:15TK 9588 from Portland (Oregon) at the gate
11:45DL 668 to New York JFK leaves the gatealso UX 3429, LY 4440, VS 4762, LA 6225, LA 6342, KL 7014, KL 7260
20 h 30 apart on the timetable, overnight
DL 668 leaves 20 h 30 after TK 9588 arrives on the timetable: more than half a day, so not a connection we count.