  Bethe-Salpeter (BS) equation in Minkowski space for scalar particles is
solved for a kernel given by a sum of ladder and cross-ladder exchanges. The
solution of corresponding Light-Front (LF) equation, where we add the
time-ordered stretched boxes, is also obtained. Cross-ladder contributions are
found to be very large and attractive, whereas the influence of stretched boxes
is negligible. Both approaches -- BS and LF -- give very close results.
