Re: 24 light years apart
Those stars would have to be in tight orbits to avoid the gravitational churning of the binary system, which would either get them consumed or ejected fairly quickly. But I'd guess that tight orbit stars wouldn't last all that much longer, what with their own gravity wave losses and regular tugs from the other hole.
Everything around and between the holes will be totally cleared out by now, except for a few of the stars in distant orbit around both holes that are perturbed gradually until they finally drop into the Grand Blender and get flung into eternity, either outward or inward.