UA 3530 then UA 4548 at Dulles
Indianapolis → Washington → Cleveland
Timetable, Washington time
16:35UA 3530 from Indianapolis at the gate
12:50UA 4548 to Cleveland leaves the gate
20 h 15 apart on the timetable, overnight
UA 4548 leaves 20 h 15 after UA 3530 arrives on the timetable: more than half a day, so not a connection we count.