AC 4121 then KE 7259 at San Francisco
Ontario → San Francisco → Los Angeles
Timetable, San Francisco time
17:50AC 4121 from Ontario at the gate
12:05KE 7259 to Los Angeles leaves the gate
18 h 15 apart on the timetable, overnight
KE 7259 leaves 18 h 15 after AC 4121 arrives on the timetable: more than half a day, so not a connection we count.