UA 3852 then UA 785 at San Francisco
Ontario → San Francisco → Washington
Timetable, San Francisco time
14:00UA 3852 from Ontario at the gate
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
16 h 15 apart on the timetable, overnight
UA 785 leaves 16 h 15 after UA 3852 arrives on the timetable: more than half a day, so not a connection we count.