UA 5820 then UA 2409 at LAX
San Luis Obispo → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
11:10UA 5820 from San Luis Obispo at the gate
23:47UA 2409 to Chicago O'Hare leaves the gate
12 h 37 apart on the timetable
UA 2409 leaves 12 h 37 after UA 5820 arrives on the timetable: more than half a day, so not a connection we count.