AC 3338 then MX 259 at San Francisco
Portland (Oregon) → San Francisco → Cincinnati
Timetable, San Francisco time
15:15AC 3338 from Portland (Oregon) at the gatealso NZ 9358
12:46MX 259 to Cincinnati leaves the gate
21 h 31 apart on the timetable, overnight
MX 259 leaves 21 h 31 after AC 3338 arrives on the timetable: more than half a day, so not a connection we count.