FR 7350 then UA 991 at Barcelona
Vienna → Barcelona → Washington
Timetable, Barcelona time
18:30FR 7350 from Vienna at the gate
10:30UA 991 to Washington leaves the gate
16 h apart on the timetable, overnight
UA 991 leaves 16 h after FR 7350 arrives on the timetable: more than half a day, so not a connection we count.