AA 6448 then AA 6238 at DFW
South Bend → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
19:53AA 6448 from South Bend at the gate
08:25AA 6238 to Amarillo leaves the gate
12 h 32 apart on the timetable, overnight
AA 6238 leaves 12 h 32 after AA 6448 arrives on the timetable: more than half a day, so not a connection we count.