I believe Studer was not prepared for this match. He just wanted to say play on even in situations he could not do that. He missed a clear panalty for Benfica in minute 14. During this half he committed mistakes for both teams with many mistakes in midfield duels and some yellows he forgot.
He was better, in part because the game allowed it. However, in minute 73 a (very) clear penalty in the Trabzonspor penalty area and Studer again said play on. This decision as no motive. He is in a very good position, the AR1 as a good view. The defender's arms are in a position that is not natural an in movement and still Studer said play on.
Almost weak... Both teams still warming up for the season, just the 2 goals were the situations to remember.