DL 2975 then AA 1997 at LAX
Portland (Oregon) → Los Angeles → Austin
Timetable, Los Angeles time
13:30DL 2975 from Portland (Oregon) at the gate
10:38AA 1997 to Austin leaves the gate
21 h 08 apart on the timetable, overnight
AA 1997 leaves 21 h 08 after DL 2975 arrives on the timetable: more than half a day, so not a connection we count.