UA 626 then UA 785 at San Francisco
Nashville → San Francisco → Washington
Timetable, San Francisco time
11:07UA 626 from Nashville at the gatealso VA 8093, NZ 9388
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
19 h 08 apart on the timetable, overnight
UA 785 leaves 19 h 08 after UA 626 arrives on the timetable: more than half a day, so not a connection we count.