  We describe a simple experimental setting where joint measurements performed
on a single (classical or quantum) entity can violate both the Bell-CHSH
inequality and the marginal laws (also called no-signaling conditions). Once
emitted by a source, the entity propagates within the space of Alice's and
Bob's detection screens, with the measurements' outcomes corresponding to the
entity being absorbed or not absorbed in a given time interval. The violation
of the marginal laws results from the fact that the choice of the screen on the
side of Alice affects the detection probability on the side of Bob, and vice
versa, and we show that for certain screen choices the Bell-CHSH inequality can
be violated up to its mathematical maximum. Our analysis provides a
clarification of the mechanisms that could be at play when the Bell-CHSH
inequality and marginal laws are violated in entangled bipartite systems, which
would not primarily depend on the presence of a bipartite structure but on the
fact that the latter can manifest as an undivided whole.
