EC 7681 then UA 770 at Barcelona
Lisbon → Barcelona → Chicago
Timetable, Barcelona time
21:50EC 7681 from Lisbon at the gatealso U2 7681
15:10UA 770 to Chicago leaves the gatealso AC 4575, LH 8858
17 h 20 apart on the timetable, overnight
UA 770 leaves 17 h 20 after EC 7681 arrives on the timetable: more than half a day, so not a connection we count.