UA 1275 then AS 9915 at LAX
Cancún → Los Angeles → Dallas-Fort Worth
Timetable, Los Angeles time
17:34UA 1275 from Cancún at the gate
07:34AS 9915 to Dallas-Fort Worth leaves the gate
14 h apart on the timetable, overnight
AS 9915 leaves 14 h after UA 1275 arrives on the timetable: more than half a day, so not a connection we count.