AC 739 then UA 785 at San Francisco
Toronto → San Francisco → Washington
Timetable, San Francisco time
11:10AC 739 from Toronto at the gatealso NZ 4733, UA 8698
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
19 h 05 apart on the timetable, overnight
UA 785 leaves 19 h 05 after AC 739 arrives on the timetable: more than half a day, so not a connection we count.