UA 2124 then UA 684 at LAX
Chicago O'Hare → Los Angeles → Fresno
Timetable, Los Angeles time
18:27UA 2124 from Chicago O'Hare at the gate
16:30UA 684 to Fresno leaves the gate
22 h 03 apart on the timetable, overnight
UA 684 leaves 22 h 03 after UA 2124 arrives on the timetable: more than half a day, so not a connection we count.