Yes. It has been discussed a lot. IIRC there were three places for sale on the street at the time.
One was the wooded lot directly across the road from FGMs house.
We speculated, at the time, that the 'well dressed man' who had stopped and asked for directions to Batar Creek Rd could have been someone looking at properties. He was later discounted by the police (from having anything to do with William).
Another time, we wondered if the two cars parked across the road from FGM's could have been property agents ... or someone to do with the sale of properties on the street - like gardeners, cleaners, painters.
That's all I really recall of our old convos about it, at this moment.