AA 5118 then DL 5626 at Charlotte
Knoxville → Charlotte → Boston
Timetable, Charlotte time
10:17AA 5118 from Knoxville at the gate
09:50DL 5626 to Boston leaves the gate
23 h 33 apart on the timetable, overnight
DL 5626 leaves 23 h 33 after AA 5118 arrives on the timetable: more than half a day, so not a connection we count.