EK 6489 then AV 2354 at San Francisco
Seattle → San Francisco → Denver
Timetable, San Francisco time
12:59EK 6489 from Seattle at the gate
05:00AV 2354 to Denver leaves the gate
16 h 01 apart on the timetable, overnight
AV 2354 leaves 16 h 01 after EK 6489 arrives on the timetable: more than half a day, so not a connection we count.