In this talk we will review the deconstruction of six-dimensional N=(2,0) theories using quiver theories in four dimensions. We check the deconstruction proposal for using exact methods based on Higgs branch Hilbert series computation in four dimensions and the half-BPS index in six dimensions. We introduce a technical tool needed for the computation, namely the Weyl integration formula over a class of non-connected Lie groups, which is used in this context to integrate over orthogonal groups.