M6 5778 then UA 4054 at Houston
Louisville → Houston → Memphis
Timetable, Houston time
17:04M6 5778 from Louisville at the gate
16:28UA 4054 to Memphis leaves the gate
23 h 24 apart on the timetable, overnight
UA 4054 leaves 23 h 24 after M6 5778 arrives on the timetable: more than half a day, so not a connection we count.