UA 367 then DL 635 at San Francisco
Washington → San Francisco → Atlanta
Timetable, San Francisco time
01:29UA 367 from Washington at the gatealso LH 7530, VA 8388, NZ 9181
21:42DL 635 to Atlanta leaves the gate
20 h 13 apart on the timetable
DL 635 leaves 20 h 13 after UA 367 arrives on the timetable: more than half a day, so not a connection we count.