UA 5086 then UA 3907 at Houston
Chattanooga → Houston → Washington
Timetable, Houston time
08:34UA 5086 from Chattanooga at the gate
07:00UA 3907 to Washington leaves the gate
22 h 26 apart on the timetable, overnight
UA 3907 leaves 22 h 26 after UA 5086 arrives on the timetable: more than half a day, so not a connection we count.