AA 4040 then AS 9921 at DFW
Brownsville → Dallas-Fort Worth → Salt Lake City
Timetable, Dallas-Fort Worth time
18:47AA 4040 from Brownsville at the gate
18:04AS 9921 to Salt Lake City leaves the gate
23 h 17 apart on the timetable, overnight
AS 9921 leaves 23 h 17 after AA 4040 arrives on the timetable: more than half a day, so not a connection we count.