UA 4040 then DL 2147 at Atlanta
Houston → Atlanta → Providence
Timetable, Atlanta time
10:36UA 4040 from Houston at the gate
09:55DL 2147 to Providence leaves the gate
23 h 19 apart on the timetable, overnight
DL 2147 leaves 23 h 19 after UA 4040 arrives on the timetable: more than half a day, so not a connection we count.