Do you think an A/C flying at VSS, on the wrong side of the drag curve, could land as far as one flying at VREF and using the surplus energy to flare and make a controled landing?
Looks like we're going round the argument yet again.
Isn't the point that they were already on the back of the drag curve by the time it became clear they were landing with little or no power? Trying to retrieve Vref from there would surely result in the ground getting in the way.
Theoretical conjecture about what may have been achieved by a crew in full readiness for double engine failure at 600ft seems pointless.