DL 4099 then UA 457 at LAX
Reno → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
13:52DL 4099 from Reno at the gate
12:40UA 457 to Chicago O'Hare leaves the gate
22 h 48 apart on the timetable, overnight
UA 457 leaves 22 h 48 after DL 4099 arrives on the timetable: more than half a day, so not a connection we count.