UA 3911 then UA 744 at Houston
Washington → Houston → Cleveland
Timetable, Houston time
00:06UA 3911 from Washington at the gate
18:13UA 744 to Cleveland leaves the gate
18 h 07 apart on the timetable
UA 744 leaves 18 h 07 after UA 3911 arrives on the timetable: more than half a day, so not a connection we count.