DL 977 then JL 7553 at San Francisco
Boston → San Francisco → Los Angeles
Timetable, San Francisco time
11:41DL 977 from Boston at the gate
07:00JL 7553 to Los Angeles leaves the gate
19 h 19 apart on the timetable, overnight
JL 7553 leaves 19 h 19 after DL 977 arrives on the timetable: more than half a day, so not a connection we count.