DL 521 then AA 1756 at DFW
Los Angeles → Dallas-Fort Worth → Raleigh-Durham
Timetable, Dallas-Fort Worth time
15:02DL 521 from Los Angeles at the gate
14:57AA 1756 to Raleigh-Durham leaves the gate
23 h 55 apart on the timetable, overnight
AA 1756 leaves 23 h 55 after DL 521 arrives on the timetable: more than half a day, so not a connection we count.