DL 961 then AA 3773 at DFW
Atlanta → Dallas-Fort Worth → Mazatlan
Timetable, Dallas-Fort Worth time
11:16DL 961 from Atlanta at the gate
11:08AA 3773 to Mazatlan leaves the gate
23 h 52 apart on the timetable, overnight
AA 3773 leaves 23 h 52 after DL 961 arrives on the timetable: more than half a day, so not a connection we count.