  In the present work, we study qualitatively the physics of granular
temperature coexistence, for a mixture of two different species. Our model
captures its essential aspects and this allows us to get insights on the
physical mechanisms of distinct temperature coexistence, in a way which is not
obscured by the complexities of kinetic theories or numerical simulations. Our
simple model is consistent with limit situations where we should expect
equality for the granular temperatures for the mixture.
