AA 1840 then UA 3875 at Houston
Charlotte → Houston → Melbourne (Florida)
Timetable, Houston time
22:48AA 1840 from Charlotte at the gate
22:00UA 3875 to Melbourne (Florida) leaves the gate
23 h 12 apart on the timetable, overnight
UA 3875 leaves 23 h 12 after AA 1840 arrives on the timetable: more than half a day, so not a connection we count.