Looks like the Brewers were aware of this and didn't tell Harrison? I wish I knew who was representing "the Brewers" in the sentence below:
Harrison felt Caballero had begun to make eye contact with him before dipping his head back down, something the Brewers were aware of heading into the game.
“I can’t tell you. They didn’t really make that clear to me,” Harrison said of the situation. “That whole thing was kind of BS. But oh well, it is what it is. It’s the guy’s game and I got to know that. Got to give it both ways. I remember times I was waiting to be sure. Just a tricky thing I’ve never run into, someone trying to exploit that.”