AC 3338 then UA 1372 at San Francisco
Portland (Oregon) → San Francisco → Boston
Timetable, San Francisco time
15:15AC 3338 from Portland (Oregon) at the gatealso VA 8585, NZ 9358
12:45UA 1372 to Boston leaves the gatealso VA 8305, NZ 9010
21 h 30 apart on the timetable, overnight
UA 1372 leaves 21 h 30 after AC 3338 arrives on the timetable: more than half a day, so not a connection we count.