AC 554 then UA 4754 at LAX
Vancouver → Los Angeles → Sacramento
Timetable, Los Angeles time
16:41AC 554 from Vancouver at the gate
16:30UA 4754 to Sacramento leaves the gate
23 h 49 apart on the timetable, overnight
UA 4754 leaves 23 h 49 after AC 554 arrives on the timetable: more than half a day, so not a connection we count.