AM 4431 then ET 1359 at San Francisco
Los Angeles → San Francisco → Washington
Timetable, San Francisco time
23:21AM 4431 from Los Angeles at the gate
23:20ET 1359 to Washington leaves the gate
23 h 59 apart on the timetable, overnight
ET 1359 leaves 23 h 59 after AM 4431 arrives on the timetable: more than half a day, so not a connection we count.