  We discuss nonfactorizable $1/N_c$ contributions in the amplitudes of
non-leptonic exclusive decays of the type $B\rightarrow D\pi$ ($N_c$ is the
number of colors). In a certain kinematical limit rather reliable estimates are
possible. It is demonstrated that the nonfactorizable parts are of the same
order as the factorizable $1/N_c$ parts of the ampiltudes, and have the
opposite sign. Thus, an approximate rule of discarding $1/N_c$ corrections in
the nonleptonic exclusive decays emerges dynamically. It is shown that this
rule is not exact and the degree of compensation is different in different
channels.
  Our predictions make use of the fact that a key matrix element that measures
deviations from factorization can be determined using the heavy quark effective
theory.
