AZ 640 then CX 7858 at San Francisco
Rome → San Francisco → Seattle
Timetable, San Francisco time
13:10AZ 640 from Rome at the gatealso EY 3018
08:33CX 7858 to Seattle leaves the gate
19 h 23 apart on the timetable, overnight
CX 7858 leaves 19 h 23 after AZ 640 arrives on the timetable: more than half a day, so not a connection we count.