UA 3530 then UA 3752 at Dulles
Indianapolis → Washington → Lafayette Purdue University
Timetable, Washington time
16:35UA 3530 from Indianapolis at the gate
12:05UA 3752 to Lafayette Purdue University leaves the gate
19 h 30 apart on the timetable, overnight
UA 3752 leaves 19 h 30 after UA 3530 arrives on the timetable: more than half a day, so not a connection we count.