DL 883 then UA 1754 at LAX
Detroit → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
19:00DL 883 from Detroit at the gate
18:47UA 1754 to Chicago O'Hare leaves the gate
23 h 47 apart on the timetable, overnight
UA 1754 leaves 23 h 47 after DL 883 arrives on the timetable: more than half a day, so not a connection we count.