AA 4259 then AA 2753 at DFW
Tulsa → Dallas-Fort Worth → Valparaiso
Timetable, Dallas-Fort Worth time
17:36AA 4259 from Tulsa at the gate
16:51AA 2753 to Valparaiso leaves the gate
23 h 15 apart on the timetable, overnight
AA 2753 leaves 23 h 15 after AA 4259 arrives on the timetable: more than half a day, so not a connection we count.