https://www.youtube.com/watch?v=51JhMMeHHMI
This fellow quotes information gathered on Instagram, that explains the likely course of events. Uncorroborated, but...
It explains the “911 unconscious person” call, who it was that spoke to the cops, why the confusion about the murders. In the short time before before police arrived, there were several friends of the group who entered the house and contaminated the scene.
Yes, the two unharmed girls called their boyfriends instead of the cops!.................
I heard the killer locked the victims bedroom doors and that survivirs couldn’t get in, called the police saying they were “unresponsive” meaning they wouldn’t respond to their knocks, calls or attempts to open the doors.