FR 7350 then UA 770 at Barcelona
Vienna → Barcelona → Chicago
Timetable, Barcelona time
19:35FR 7350 from Vienna at the gate
15:10UA 770 to Chicago leaves the gatealso AC 4575, LH 8858
19 h 35 apart on the timetable, overnight
UA 770 leaves 19 h 35 after FR 7350 arrives on the timetable: more than half a day, so not a connection we count.