  {\bf Background} Deuteron induced reactions are widely used to probe nuclear
structure and astrophysical information. Those (d,p) reactions may be viewed as
three-body reactions and described with Faddeev techniques.
  {\bf Purpose} Faddeev-AGS equations in momentum space have a long tradition
of utilizing separable interactions in order to arrive at sets of coupled
integral equations in one variable. However, it needs to be demonstrated that
observables calculated based on separable interactions agree exactly with those
based on nonseparable forces.
  {\bf Methods} Momentum space AGS equations are solved with separable and
nonseparable forces as coupled integral equations.
  {\bf Results} Deuteron-alpha scattering is calculated via momentum space AGS
equations using the CD-Bonn neutron-proton force and a Woods-Saxon type
neutron(proton)-$^4$He force, for which the Pauli-forbidden S-wave bound state
is projected out. Elastic as well as breakup observables are calculated and
compared to results in which the interactions in the two-body sub-systems are
represented by separable interactions derived in the Ernst-Shakin-Thaler (EST)
framework. {\bf Conclusions} We find that the calculations based on the
separable representation of the interactions and the original interactions give
results that are in excellent agreement. Specifically, integrated cross
sections and angular distributions for elastic scattering agree within
$\approx$ 1\%, which is well below typical experimental errors. In addition,
the five-fold differential cross sections corresponding to breakup of the
deuteron agree extremely well.
