The Lego Batman Movie is a 2017 3D computer-animated superhero comedy film, produced by Warner Animation Group. It was directed by Chris McKay, and written by Seth Grahame-Smith, Chris McKenna, Erik Sommers, Jared Stern and John Whittington, and produced by Dan Lin, Roy Lee, Phil Lord and Christopher Miller. Based on the Lego Batman toy line, the film is an international co-production of the United States, Australia, and Denmark, and the first spin-off installment of The Lego Movie franchise. The story focuses on the DC Comics character Batman as he attempts to overcome his greatest fear to stop the Joker's latest plan, with Will Arnett reprising his role as Batman for the film, along with Zach Galifianakis, Michael Cera, Rosario Dawson, and Ralph Fiennes.

Can we conclude that is the lego batman movie connected to the lego movie?
yes