UA 367 then UA 1603 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
21:30UA 1603 to Atlanta leaves the gatealso CA 7245, VA 8401, NZ 9000
20 h 01 apart on the timetable
UA 1603 leaves 20 h 01 after UA 367 arrives on the timetable: more than half a day, so not a connection we count.