UA 3852 then UA 1642 at San Francisco
Ontario → San Francisco → Newark
Timetable, San Francisco time
14:00UA 3852 from Ontario at the gate
08:15UA 1642 to Newark leaves the gatealso VA 8152, SN 8942, NZ 9104
18 h 15 apart on the timetable, overnight
UA 1642 leaves 18 h 15 after UA 3852 arrives on the timetable: more than half a day, so not a connection we count.