AM 4431 then B6 1534 at San Francisco
Los Angeles → San Francisco → Boston
Timetable, San Francisco time
23:21AM 4431 from Los Angeles at the gate
22:10B6 1534 to Boston leaves the gatealso EY 8032
22 h 49 apart on the timetable, overnight
B6 1534 leaves 22 h 49 after AM 4431 arrives on the timetable: more than half a day, so not a connection we count.