AA 2141 then AS 9915 at LAX
Boston → Los Angeles → Dallas-Fort Worth
Timetable, Los Angeles time
14:05AA 2141 from Boston at the gate
07:34AS 9915 to Dallas-Fort Worth leaves the gate
17 h 29 apart on the timetable, overnight
AS 9915 leaves 17 h 29 after AA 2141 arrives on the timetable: more than half a day, so not a connection we count.