EW 7520 then AC 3177 at Barcelona
Hamburg → Barcelona → Washington
Timetable, Barcelona time
16:20EW 7520 from Hamburg at the gate
10:30AC 3177 to Washington leaves the gatealso LH 7947
18 h 10 apart on the timetable, overnight
AC 3177 leaves 18 h 10 after EW 7520 arrives on the timetable: more than half a day, so not a connection we count.