It's not impossible but the likelihood of BRE having anything to do with the girls directly before having allegedly abducted them is highly unlikely. even more so when you start talking prior to the night of the abductions. The girls attending the same schools is nothing more than a geographical coincidence. It's like if I started serial killing in China, chances are my victims will all be Chinese.
It could have been any girl abducted and murdered on those nights, these girls just happened to be in the wrong place at the wrong time.
IMO the accused used charm and friendliness, coupled with a elaborate lie to trick victims into getting into the car.......
For Example:
I imagine the CSK driving around with a child seat on the back seat, and a fake baby (eg a doll) strapped into the child seat. Using some elaborate lie about the child not being able to sleep because he/she was teething, and that the CSK was driving around trying to get the child to sleep. Maybe the CSK had a blanket tucked up high around the fake baby/doll's head, so it was impossible to see its doll-like features. This scenario would work even better if CSK installed the child seat in the rear-facing position and had window sun-guards restricting views of the fake baby/doll in the seat.
Its possible the CSK learnt from the Birnies that it was necessary to portray a semblance of safety within the car, so women would easily agree to jump in the passenger side front seat. After which the CSK could drive a short distance away into a secluded spot and incapacitate the victims and restrain them, lying them down, maybe on the floor or in the boot, and then cover them with another blanket. And off they go.......
The Birnies perfected the 'safe couple' scenario. If CSK was operating alone, then he needed another safe looking scenario. Many Aussie men joke about the ease of picking-up women while out walking their dogs, or while out with their child/ren. And maybe dogs and children offer a false sense of security that a 'strange guy' is safe, and the CSK capitalised on this phenomenon. A baby seat and life-like doll could be easily obtained from second hand shops, swap-meets, verges, or even SD's car seat or toy was used, but only if the accused was dating CGE at the time of the abductions/murders. And in same vein, if the CSK bought the car seat and doll for just this purpose, then both items could easily be disposed off in a bin along the way.
Of course, this is all my imagination working over time....
Coaxing the victims into the car with some elaborate story makes sense to me, because both Ciara and Sarah were on the left hand side of the road. If blitzing occurred, the car pulling up, then stopping and a lone strange man running around to the other side of the car to grab the victims, would IMO alert the victims, and give them a chance to run, defend themselves, and/or scream making a commotion! Witnesses would probably have heard screams if victims were blitzed. And all this movement and commotion around the car takes too much time. Known witnesses told of no noise or drivers getting out of cars.
Blitz would only work for Ciara and Sarah if the car drove on the wrong side of the road so driver's side was nearest the victims. But witnesses did not see this happening as no road rules were broken.
Does anyone know exact point of blitzing abduction in Rowe Park KK case? There's a small car park area in middle of Rowe Park, and maybe CSK parked up waiting...And maybe CSK decided after KK that this abduction method was too difficult and noisy, and so the CSK adapted his/her abduction style for the next victims.