The LEGO Movie 2: Phil Lord and Chris Miller Explain Their Meta Universe - IGN

The producers also confirm that The LEGO Batman Movie takes place within the same child's imagination.
The producers also confirm that The LEGO Batman Movie takes place within the same child's imagination.

The Lego Movie 2: The Second Part - Wikipedia

Best The Lego Movie 2: The Second Part Posts - Reddit

Phil Lord & Christopher Miller explain their LEGO Movie meta-universe

The LEGO Movie Helmers Phil Lord and Chris Miller Commit to

The LEGO Movie 2's Director Tried To Talk Phil Lord And Chris

The LEGO Movie 2: Phil Lord and Chris Miller Explain Their Meta

Best The Lego Movie 2: The Second Part Posts - Reddit

Lord and Miller initially turned down The LEGO Movie

The Lego Batman Movie - Wikipedia

Lego Movie 2': Do Phil Lord and Chris Miller Deserve All the

Phil Lord & Chris Miller, The Lego Movie, Features