UA 3766 then DL 1189 at LAX
Lubbock → Los Angeles → Denver
Timetable, Los Angeles time
18:37UA 3766 from Lubbock at the gate
18:30DL 1189 to Denver leaves the gate
23 h 53 apart on the timetable, overnight
DL 1189 leaves 23 h 53 after UA 3766 arrives on the timetable: more than half a day, so not a connection we count.