LH 414 then UA 989 at Dulles
Munich → Washington → Frankfurt am Main
Timetable, Washington time
20:05LH 414 from Munich at the gate
17:30UA 989 to Frankfurt am Main leaves the gate
21 h 25 apart on the timetable, overnight
UA 989 leaves 21 h 25 after LH 414 arrives on the timetable: more than half a day, so not a connection we count.