UA 367 then DL 335 at San Francisco
Washington → San Francisco → Detroit
Timetable, San Francisco time
01:29UA 367 from Washington at the gatealso LH 7530, VA 8388, NZ 9181
22:40DL 335 to Detroit leaves the gatealso WS 8016
21 h 11 apart on the timetable
DL 335 leaves 21 h 11 after UA 367 arrives on the timetable: more than half a day, so not a connection we count.