DL 521 then AA 5076 at DFW
Los Angeles → Dallas-Fort Worth → Lubbock
Timetable, Dallas-Fort Worth time
15:02DL 521 from Los Angeles at the gate
14:53AA 5076 to Lubbock leaves the gate
23 h 51 apart on the timetable, overnight
AA 5076 leaves 23 h 51 after DL 521 arrives on the timetable: more than half a day, so not a connection we count.