UA 3851 then QR 2148 at San Francisco
Rio De Janeiro → San Francisco → Palm Springs
Timetable, San Francisco time
17:41UA 3851 from Rio De Janeiro at the gate
14:36QR 2148 to Palm Springs leaves the gatealso AS 2310, FJ 5852, AA 9301
20 h 55 apart on the timetable, overnight
QR 2148 leaves 20 h 55 after UA 3851 arrives on the timetable: more than half a day, so not a connection we count.