GBMG,, Every one is an excellent question and each is "one of thousands" of unknown details that is needed to know, in order to proceed with any accuracy.
I've been trying to think of the best method for Bob & KatCo to assemble & communicate complete & highly detailed full accounts in various stages of this case. Perhaps a highly detailed & highly descriptive "diary", broken down into many sub-catagories, such as:
Pre attack #1
Attack #1
Post Attack #1 to Pre Attack #2
etc, etc.
The key here is not overlooking ANY detail, no matter how insignificant it may seem to the family.
Examples: When they described the final night, it was said "Bill came 2 doors down to get me from the birthday party".
It's important to know "missing" details such as 2 houses north or south? Same side of street (as presumed)? Describe lighting, down to the utmost detail, on their front yard area, the "birthday party" house, and all around & in-between. Etc, etc. (not limited to only what I listed)
Another example: Bill was found in ditch by tree near RR tracks, with scarf tied tight around his neck.
Was the knot in front, side, or back of his neck? If on side, which side? Was he directly under a tree? How long were the "loose ends" of the scarf? Was there any sign the scarf ends had previously been tied to the tree or limb? Did you notice any debris in the scarf ends, such as small pieces of tree bark or other debris? Exactly where was he found? (not just an approx "X" on a zoomed out aerial view.
My point here is, for any success in determining a proper direction, or success in gathering additional info, every facet of any event or scene must be described in the highest of detail. These details that one person may consider totally insignificant, actually may present to be the utmost in value to a skilled detective.
In simple terms, the quality & detailed-ness we are provided... is directly related to the chance of success in solving this case.
Personally, I think once 2 years goes by on any cold case, then LE should make publicly available all police reports and information, excluding actual suspects. Physical evidence must always be kept sealed/stored & protected from public hands, however.
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RE: GBMG's Post #334 heading:
Warning! Warning! Post Goes Nowhere! Lots of Blather Ahead!
You have some of the best "blather", GBMG! Keep it coming!