Tom Knaus just returned my call, and we spoke for about 15 minutes. As stated before, certain things must be kept confidential, but I can add the following:
Still, nothing has been settled on this possible match, but he still feels very confident about it, and he reiterated that due to circumstances (which I cannot reveal), it will probably take a long time.
Lurline Buergeron was not on his rule-out list, but when he gets a chance, he will take a look at her case.
He said that he is reluctant to publicize his rule-out list because many of the approximately 1200 rule-outs were on less-than-scientific bases (such as eye-color or height differences). He would prefer to receive a tip for someone who was already on the list and he could re-evaluate the possible and decide whether or not it is worth a second look.
I asked him if the perp was ever apprehended, or whether the other Illinois torture-murder case was ever connected to this one. He responded that he knew which case I was talking about, and the convicted perp is appealing his conviction on the other case. Therefore, he would not be expected to admit to this one, although Tom hopes to someday interview the perp when the appeals are exhausted. But Crystal Rae's murder remains unsolved (both with regard to her identity, and with regard to the perp).
He also said that as far as he knows, there are no dentals available for Aundria (as indicated in NamUs).