  We study the entanglement entropy of a subsystem in contact with symmetrical
bath where the complete system lives on the boundary of AdS3 spacetime. The
system-A is taken to be in the middle of the bath system-B and the full system
is taken to be some fixed localized region of the boundary 2-dimensional CFT.
We generally assume that the d.o.f.s in the total system remain fixed when we
vary the size of the bath which is to be guided by the conservation laws. It is
found that the island and the subleading (icebergs) contributions are
inseparable, and in totality they contribute nothing to the Page-curve of the
radiation. As such they contribute only to the unphysical branch of the
entropy. The entropy formula of the radiation may simply be written as minimum
of {S[A],S[B]} including for the black holes.
