DL 1743 then AA 2578 at Atlanta
Knoxville → Atlanta → Dallas-Fort Worth
Timetable, Atlanta time
13:36DL 1743 from Knoxville at the gate
13:28AA 2578 to Dallas-Fort Worth leaves the gate
23 h 52 apart on the timetable, overnight
AA 2578 leaves 23 h 52 after DL 1743 arrives on the timetable: more than half a day, so not a connection we count.