  We revisit the Bose-Marletto-Vedral (BMV) table-top experimental proposal -
which aims to witness quantum gravity using gravity mediated entanglement -
analyzing the role of locality in the experiment. We first carry out a fully
quantum modelling of the interaction of matter and gravity and then show in
what way gravity mediated entanglement in the BMV experiment could be accounted
for without appealing to quantum degrees of freedom of the gravitational field.
We discuss what assumptions are needed in order to interpret the current BMV
experiment proposals as a proof of quantum gravity, and also identify the
modifications that a BMV-like experiment could have in order to serve as proof
of quantum gravity without having to assume the existence of a local mediators
in the gravitational field.
