TK 9588 then CA 7307 at San Francisco
Portland (Oregon) → San Francisco → Boston
Timetable, San Francisco time
15:15TK 9588 from Portland (Oregon) at the gate
12:45CA 7307 to Boston leaves the gatealso NH 7330
21 h 30 apart on the timetable, overnight
CA 7307 leaves 21 h 30 after TK 9588 arrives on the timetable: more than half a day, so not a connection we count.