be/talk at cross purposes
be at cross purposes
To be in conflict with or in opposition to someone or something. You will never find success if you continue to be at cross purposes with your teammates.
talk at cross purposes
To talk with others in a way that promotes or maintains conflict or opposition. You will never find success if you continue to talk at cross purposes with your teammates.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be/talk at cross ˈpurposes(of two people or groups) misunderstand what the other is referring to or trying to do: Mary and I spoke about Anne for a minute or two before I realized we were talking at cross purposes: I meant Anne Smith and Mary meant Anne Harris.
Farlex Partner Idioms Dictionary © Farlex 2017