F9 3208 then UA 228 at Dulles
Dallas-Fort Worth → Washington → Dublin
Timetable, Washington time
11:36F9 3208 from Dallas-Fort Worth at the gate
00:12UA 228 to Dublin leaves the gate
12 h 36 apart on the timetable, overnight
UA 228 leaves 12 h 36 after F9 3208 arrives on the timetable: more than half a day, so not a connection we count.