UA 1341 then UA 2386 at San Francisco
Detroit → San Francisco → Washington National
Timetable, San Francisco time
19:31UA 1341 from Detroit at the gatealso OZ 9538
14:18UA 2386 to Washington National leaves the gatealso NZ 2777
18 h 47 apart on the timetable, overnight
UA 2386 leaves 18 h 47 after UA 1341 arrives on the timetable: more than half a day, so not a connection we count.