Chronicle (2) showing detailed event timing in Fig. 1. Highlighted is ℰ_GW by rejuvenation in gravitational collapse of the hyper-massive neutron star formed in the immediate aftermath of the merger at ≲t_s in the 1.7 s gap G between GW170817–GRB170817A, in a Kerr black hole with spin-energy exceeding in its progenitor according to (3). amply accounts for ℰ_GW = (3.5 ± 1)% M_⊙c², breaking the degeneracy between neutron stars and black holes.