UA 1367 then UA 2127 at San Francisco
Boston → San Francisco → Los Angeles
Timetable, San Francisco time
17:40UA 1367 from Boston at the gatealso VA 8580, NZ 9026
06:00UA 2127 to Los Angeles leaves the gatealso AV 2163, NZ 9260
12 h 20 apart on the timetable, overnight
UA 2127 leaves 12 h 20 after UA 1367 arrives on the timetable: more than half a day, so not a connection we count.