In this case, we can expect that after the merging a black hole
results from a direct collapse during the time 
and
that the most energy is emitted in the gravitational wave burst.
This scenario is discussed more frequently in the literature, and
GRB phenomenon can be related with the relativistic particle ejection
in the form of a Fireball (Rees & Meszaros, 1992) or a beam of protons
(Shaviv & Dar, 1996).
In addition, a certain fraction of radiated energy can be related with the
pulsar mechanism (Lipunov & Panchenko 1996; Lipunova 1997).
No gravitationally bound object can be formed in this case outside
the horizon. We can present these stages by the following way:
GWB -- gravitational waves burst,
-- neutrino burst.