AA 3997 then AA 2753 at DFW
Longview → Dallas-Fort Worth → Valparaiso
Timetable, Dallas-Fort Worth time
07:21AA 3997 from Longview at the gate
19:24AA 2753 to Valparaiso leaves the gate
12 h 03 apart on the timetable
AA 2753 leaves 12 h 03 after AA 3997 arrives on the timetable: more than half a day, so not a connection we count.