  The famous Wigner's friend experiment considers an observer -- the friend --
and a superobserver -- Wigner -- who treats the friend as a quantum system and
her interaction with other quantum systems as unitary dynamics. This is at odds
with the friend describing this interaction via collapse dynamics, if she
interacts with the quantum system in a way that she would consider a
measurement. These different descriptions constitute the Wigner's friend
paradox. Extended Wigner's friend experiments combine the original thought
experiment with non-locality setups. This allows for deriving local
friendliness inequalities, similar to Bell's theorem, which can be violated for
certain extended Wigner's friend scenarios. A Wigner's friend paradox and the
violation of local friendliness inequalities require that no classical record
exists, which reveals the result the friend observed during her measurement.
Otherwise Wigner agrees with his friend's description and no local friendliness
inequality can be violated. In this article, I introduce classical
communication between Wigner and his friend and discuss its effects on the
simple as well as extended Wigner's friend experiments. By controlling the
properties of a (quasi) classical communication channel between Wigner and the
friend one can regulate how much outcome information about the friend's
measurement is revealed. This gives a smooth transition between the paradoxical
description and the possibility of violating local friendliness inequalities,
on the one hand, and the effectively collapsed case, on the other hand.
