DL 4654 then DL 2051 at Atlanta
Knoxville → Atlanta → Houston Hobby
Timetable, Atlanta time
09:44DL 4654 from Knoxville at the gate
22:09DL 2051 to Houston Hobby leaves the gate
12 h 25 apart on the timetable
DL 2051 leaves 12 h 25 after DL 4654 arrives on the timetable: more than half a day, so not a connection we count.