Hearts manager Robbie Neilson insists referees and not Celtic beat his team on Thursday night.
The Jambos went down 1-0 at Parkhead thanks to Kyogo Furuhashi 's goal, but the visitors were adamant he was offside when Anthony Ralston crossed it.
Celtic manager Ange Postecoglou shrugged it off post-match but, speaking to Sky Sports, his opposite number gave it both barrels.
Neilson said: "I am very proud of the players, I thought they were exceptional today.
"I thought first half we matched Celtic. We had a few chances, they had a few chances. Second half, I thought we played very, very well.
"I felt today we didn't get beat by Celtic, we got beat by poor decisions from the referee and the linesman.
"We can all laugh and joke about it, but I said a comment when we were at Ibrox prevously and I got the book thrown at me, so I can't say too much about it.
"It's disappointing that when you come here, and you put all that work rate into a game, and the players are magnificent, that you get beat by a poor decision from the official.
"It's offside, do you want me to talk it through?
"The linesman is looking straight ahead of him, there is no players in his line so he can see it. It happens, doesn't it?
"We all have a laugh and a joke about it, but, you know."
When asked if he had spoken to referee Bobby Madden and his team, he said: "I tried to, but it's a bit of a waste of time.
"You just end up getting banned with red cards and yellow cards.
"The disappointing thing for us tonight is we take nothing from the game. In my opinion we deserve to take something from the game.
"We played really well against a very, very good team and they're hanging on the last 15 minutes as we pressed them. Key moments in the game, yes Craig had a few good saves in the first half, but we had a number of opportunities in the second to get not just the point, but we could've got the win in the end.
"We were done by a very, very poor official.
"We've got a game on Sunday, and we've got to pick ourselves up for that.
"I'm sure the referee will look at it, and the linesman will look at it. they will WhatsApp each other and move onto the next game."
And the Hearts boss refused to even discuss his reaction to the game being stopped when Jota pulled up with an apparent hamstring injury.
Neilson said: "I'd end up going to jail if I said what I want to say about it. I've never seen it in my life before.
"The boy pulls his hamstring and the referee stops the game, and they get the ball back when we're going to counter attack.
"Scottish football, you're in Glasgow."