AA 644 then AA 6273 at Phoenix
Tampa → Phoenix → Lubbock
Timetable, Phoenix time
20:50AA 644 from Tampa at the gate
20:14AA 6273 to Lubbock leaves the gate
23 h 24 apart on the timetable, overnight
AA 6273 leaves 23 h 24 after AA 644 arrives on the timetable: more than half a day, so not a connection we count.