Barcelona boss Quique Setien said he 'understands VAR less and less," Marca reported.
"I think we have a tool that makes football fairer, but it doesn't seem enough at the moment.
"Then it's about the interpretation that is made of incidents, even watching it replayed many times."
There was more debates on refereeing decisions on Sunday as Real Madrid were awarded a penalty and Athletic Club were not in a match at San Mames.
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