  We study the time dependence of the entanglement entropy of disjoint
intervals following a global quantum quench in (1+1)-dimensional CFTs at
large-$c$ with a sparse spectrum. The result agrees with a holographic
calculation but differs from the free field theory answer. In particular, a
simple model of free quasiparticle propagation is not adequate for CFTs with a
holographic dual. We elaborate on the entanglement tsunami proposal of Liu and
Suh and show how it can be used to reproduce the holographic answer.
