"If you see the image it's not just one player or two players in offside positions, there were five Newcastle players in the same line in offside positions".
The fine combination between Rondon and Perez left Benitez delighted as he contemplated how his side had moved up to 13th in the table.
The Blues were ahead within half an hour as Dominic Calvert-Lewin and Richarlison found the back of the net either side of a penalty save from Jordan Pickford. That's probably because Newcastle were attacking far more in the second half as they mounted their unlikely comeback.
"When they scored the third goal it was a big mistake by the assistant - it was a clear offside. Rondon was in a clear offside position".
"Of course this is hard", Silva said to Sky Sports. Everything I have to say to my players I will say in our dressing room.
Referee Lee Mason made a decision to show Pickford a yellow card and the St James' Park crowd were incensed when Pickford kept out Ritchie's effort.
That something different saw Salomon Rondon volley a reply on 65 minutes before Perez scored twice inside three minutes late on to climax a riotous turnaround.
"This team is important", Benitez told Sky Sports. "I was joking that if Messi had done what Ayo did and Alan Shearer finished like Rondon, everybody would have been talking for a month about that".
Benitez was effusive in his praise for Perez and Rondon after Newcastle's fifth consecutive Premier League home win.
The Venezuelan looked certain to score into an open goal when Pickford committed the foul and was lucky to start on the pitch.