Too many organizations for the Olympics

The Tokyo Metropolitan Government has set up the bureau which dedicates to the preparation of the 2020 Olympic and Paralympic Games.

As I wrote on this blog, the Japanese Government set up the office to coordinate Tokyo 2020 preparations in the Cabinet Office about 3 months ago.

What is different? I wonder if it's necessary that both the Japanese Government and the Tokyo Metropolitan Government have the similar organization.

Are both of the organizations necessary in the first place in spite of the fact that the Organizing Committee is soon launched?

I think it's definitely waste of tax revenues!