  The characteristics of tree level scattering amplitudes in theories with
nonlinear (super)symmetries were recently proposed by Kallosh to be encoded in
a simple way directly from the action, based on a background field method. We
check this conjecture to lowest non-trivial order in the Volkov-Akulov theory,
where the local 6-point diagram cancels and the results up to 6 points indeed
are in agreement with S-matrix computations.
