  Long gamma ray bursts (LGRBs) are associated to the collapse of a massive
star and the formation of a relativistic jet. As the jet propagates through the
star, it forms an extended, hot cocoon. The dynamical evolution of the
jet/cocoon system and its interaction with the environment has been studied
extensively both analytically and numerically. On the other hand, the role
played by the supernova (SN) explosion associated with LGRBs in determining the
outcome of the system has been barely considered. In this paper, we discuss the
large landscape of outcomes resulting from the interaction of the SN, jet and
cocoon. We show that the outcome depends mainly on three timescales: the times
for the cocoon and supernova shock wave to break through the surface of the
progenitor star, and the time needed for the cocoon to engulf completely the
progenitor star. The delay between the launch of the SN shock moving through
the progenitor star and the jet can be related to these three timescales.
Depending on the ordering of these time scales, the jet-cocoon might propagate
inside the SN ejecta or the other way around, and the outcome for the
properties of the explosion would be different. We discuss the imprint of the
complex interaction between the jet-cocoon and the supernova shock on the
emergent thermal and non-thermal radiation.
