This is all speculative. Feel free to pick at everything.
From what I have gathered in regards to the phone pings. This is the crutial step in solving the mystery.
The investigation teams, narrowed it down to a rural "corridor", meaning they have already collected a significant amount of data (in regards to phone and video surveillance)
I'm speculating that both pings happend in the late morning to early afternoon, when BR went for a drive. Maybe one could have happened in the "late afternoon" when he had recieved a request from an ''uber customer". Although not much information has been released to the media in regards to the late afternoon. It is not clear whether BR had taken the uber request.
Mr. Ristevski states he was out of the house for 1.5 hours in her car, between 10:30am and 12:00pm. However, this does not coincide with time the pings happened "hours after KR went missing". Could it be a possibility, that BR drove back along the Calder "North West" in the late afternoon for the supposed "uber customer"?
The key to solving this case, is to observe the time of pings, which have also not been released to the public. SO WE HAVE TO SPECULATE.
1. Two pings recorded
- (KR phone) 40 kilometres northwest of her home on June 29
- (BR phone) 20 kilometres northwest of their home on June 29
The pings recorded on the same "stretch of road". There was a "series"of pings. There could have recorded more pings within this series.
- determine that they could have happening in a short time frame as short as (20 minutes apart)?
- or determine that there is a lengthy amount of time (hours apart) that these pings occured. KR in the morning and BR in the afternoon or viceversa. (which is more so unlikely)
There can be so many scenarios developed observed as time and direction of travel are not released to the public, so at the moment I will comment no further.
GEOGRAPHICALLY
It is known that the investigation teams have a high appropriation with Toolern Vale. They have already gathered CCTV footage from a General Store manager. They have had this information for up to two weeks ago. Observed the footage. Found an observation? And began search quite recently and released information to the media around the 27th of August.
If this is perhaps the case, I would guess there would be a strong correlation to Coimadai Road. (As this road, leads from Diggers Rest to Toolern Vale in an easier route compared to the Calder.
Toolern Vale General Shore CCTV was observed, so there must be a correlation towards "Gisborne Melton Road and Diggers Rest Coimadai Road intersection''. Which way could either BR or KR have travelled?
If we perhaps say the ping tower could locate up to 20km. Why would KR phone ping at Gisborne and not at Diggers Rest? Could this mean that KR phone was closer to Gisborne than to Diggers Rest?
The distances of the Gisborne and Diggers Towers are approximatly 18km appart? So geographically, KR phone would have to be out further than 9km away from Diggers Rest? Perhaps we could rule out a 9km radius around Diggers Rest? 9km is approximatly Toolern Vale to Diggers Rest.
So, a 20km radius around Gisborne minus a 9km radius around Diggers Rest. You can now see why the Investigation narrowed their finding around this area.
TRAVEL TIME
33min approx from the the Avondale Heights Home to Toolern Vale. This route can be done in a shorter time, as there might be premeditation.
BR or KR could have reached Toolern Vale around 11am if they left at 10:30am. If BR went this way, he would have been back just after 12pm as he states, leaving him approx 30 minutes around Toolern Vale. So the investigation squad should technically be observing a 30 min or more time frame around from North West of Toolern Vale.
Diggers Rest/Coimadai Road Sparks an interest as there is a high precence of parkland. It is approx 12km from Bacchus Marsh/Gibson Road intersection and it appears to be some sort of mining site at the intersection.
If BR was to dump a body, he would have approximatly 10 minutes to dump and conceal at the mining site (which falls within 20km of Gisborne). It was also mentioned that the police had took the cars for forensic analysis and if there are any traces of dirt which coincides with that on the tires and mining site it could lead to her wherabouts. If however, BR would want to take the shorter route home he would maybe taken the western fwy and "not turned around on the Calder" after the Car Gauge was fixed. I feel this scenario is very rushed in accordance with BR's statements.
This leads to me believe that parkland might be more appropriate along Diggest Rest/Coimadai Road or Gisbourne Melton Road as it is flourishing with lakes, dams and resevoirs. Any one of these destinations could be a good location to dump a body (speculation).
Have the police searched places like Djerriwarrh Reservoir or Merrimu Reservoir, which still fits neatly within the time frame?
I would think that BR would have been out past 12:00pm due to the "pings being picked up hours after she went missing." So, BR could have had more time to conceal the body or drive futher out northwest.
BR's phone was on late morning b/c that's when Bella Beu Staff were able to reach him. And he was calling KR's phone shortly after.
The ping located at "Diggers Rest"on BR's phone could have been detected on BR's way home (perhaps around the time BR tried to contact KR). BR could have begun to head back after he got a call when Bella Beu Staff called the phone. The phone could have been off for 2.5 hours beginning earlier than 10am or after he arrived home, and then turned it back on and recieved a request from an uber customer.
I read in one of the threads 'AR had a bunnings footscray check in on morning before store opening." AR would have been at bunnings before 7am. AR lives around Diggers Rest. There are closer bunnings stores.
Footscray Bunnings warehouse and Oakley Drive are 11km apart. Could AR, had visited KR in the morning of the 29th? The Oakley Drive home is located between Footscray Bunnings and AR's home.
Considering, BR had headed towards Diggers Rest that morning of the 29th. Could have AR, BR, KR all been together on the morning of the 29th at some point possibly at the time KR went to "clear her head"? Could KR had left with AR, and BR left with KR's car to follow after them? This would explain why KR's car was still at home and was borrowed by BR.
So perhaps BR knew that AR and KR were with each other? Went after them towards Diggers Rest, and decided to head back for some reason. BR, could have called KR on the way back after he got a call from a Bella Beu Staff member?
The media is reporting only that KR's phone was detected "hours only" after she vanished. They didn't mention that BR's phone was detected around this time, but merely "on the same day". If BR was heading home, and KR phone pinged while he drove home or after. Could that mean, there might be possible movement with the phone without BR's involvement? What if AR was with KR at the time of KR's phone pinging. AR does not recall where he was that day?