Strange things happen when Inter Milan plays Barcelona in the Champions League semifinals. The last time the two teams met in the final four of Europe’s elite club competition, in 2010, Barcelona had to make a 15-hour journey by bus to Milan after an ash cloud caused by the eruption of the Icelandic volcano Eyjafjallajokull shut down air space.

Barcelona have been in brilliant form lately. In fact, since the start of the year, they have only lost once in 28 matches across all competitions. That kind of run builds confidence, but the real