EC 7681 then AC 3177 at Barcelona
Lisbon → Barcelona → Washington
Timetable, Barcelona time
21:50EC 7681 from Lisbon at the gatealso U2 7681
10:30AC 3177 to Washington leaves the gatealso LH 7947
12 h 40 apart on the timetable, overnight
AC 3177 leaves 12 h 40 after EC 7681 arrives on the timetable: more than half a day, so not a connection we count.