AS 688 then UA 3900 at San Francisco
Seattle → San Francisco → Rio De Janeiro
Timetable, San Francisco time
16:01AS 688 from Seattle at the gatealso QR 2147, QR 2153, QR 3438, QR 4280
16:00UA 3900 to Rio De Janeiro leaves the gate
23 h 59 apart on the timetable, overnight
UA 3900 leaves 23 h 59 after AS 688 arrives on the timetable: more than half a day, so not a connection we count.