  We present a quantitative comparison at equivalent thermodynamical conditions
of bulk and confined dynamical properties of a Lennard Jones binary mixture
upon supercooling. Both systems had been previously found to display a behavior
in agreement with the Mode Coupling theory of the evolution of glassy dynamics.
Differences and analogies of behavior are discussed focusing in particular on
the role of hopping in reducing spatially correlated dynamics in the confined
system with respect to the bulk.
