  Novel implications on neutron stars come from extended gravity. Specifically,
the GW190814 event indicated the probability of having large mass stars in the
mass-gap region $2.5-5\, M_{\odot}$. If the secondary component of GW190814 is
a neutron star, such large masses are marginally supported by General
Relativity (GR), since a very stiff Equation of State (EoS) would be needed to
describe such large mass neutron stars, which would be incompatible with the
GW170817 event, without any modification of gravity.
  In view of the two groundbreaking gravitational wave observations, we
critically discuss the elevated role of extensions of GR towards the successful
description of the GW190814 event, and we also speculate in a quantitative way
on the important issue of the largest allowed neutron star mass.
