LH 454 then UA 785 at San Francisco
Frankfurt am Main → San Francisco → Washington
Timetable, San Francisco time
12:35LH 454 from Frankfurt am Main at the gatealso NZ 4220, SN 7248, OS 7325, UA 8829
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
17 h 40 apart on the timetable, overnight
UA 785 leaves 17 h 40 after LH 454 arrives on the timetable: more than half a day, so not a connection we count.