UA 348 then MQ 3366 at Miami
Houston → Miami → Knoxville
Timetable, Miami time
18:20UA 348 from Houston at the gate
17:43MQ 3366 to Knoxville leaves the gate
23 h 23 apart on the timetable, overnight
MQ 3366 leaves 23 h 23 after UA 348 arrives on the timetable: more than half a day, so not a connection we count.