DL 883 then UA 923 at LAX
Detroit → Los Angeles → London
Timetable, Los Angeles time
18:58DL 883 from Detroit at the gate
18:55UA 923 to London leaves the gate
23 h 57 apart on the timetable, overnight
UA 923 leaves 23 h 57 after DL 883 arrives on the timetable: more than half a day, so not a connection we count.