DL 4634 then DL 3088 at Detroit
Indianapolis → Detroit → Washington
Timetable, Detroit time
07:55DL 4634 from Indianapolis at the gate
21:46DL 3088 to Washington leaves the gate
13 h 51 apart on the timetable
DL 3088 leaves 13 h 51 after DL 4634 arrives on the timetable: more than half a day, so not a connection we count.