I thought it was only confirmed that June was shot whilst sat upright in bed not whilst laying?
Lookout thinks the phones could be used internally. If this is the case SC might have phoned NB from the kitchen, or another room, to the main bedroom as was the norm when she phoned from Morsehead Manions ie she phoned NB in a distressed state late at night/early hours. She may have made several calls. If so why and when was the phone in the main bedroom moved? Perhaps to avoid waking June? June was apparently a light sleeper.
My experience of properties similar to WHF is that sound is minimal from one room to another due to the thick walls/materials used. No Wimpy internal plasterboard walls

Hi NN

If you read the Mcdonnell report the blood pattern that is on the pillow, is where she lifted herself up off the pillow after being shot, The bullet went through her neck and into the pillow as she was laying.
I'm inclined to think that noise level would have been minimum in a old house like that. Maybe Shelia went down for something to eat....One thing is for sure, I don't think a row broke out between her and her mother, because June was lying down in a sleeping position, had she woken then she might not have been in that position......
I can't see any evidence to suggest that NB was shot in his bed, but we do know he had a downward shot to his shoulder, thus being that the killer was in a higher position at the time he received that shoulder shot, this is why I believe this was done on the stairs....One case shell was found there which could back that theory up? So if that;s the case then the other three shots were fired in the master bedroom...
The only thing that bugs me, is that there were only 3 case shells found in the kitchen and he had 4 fatal shots to the head in the kitchen. There are no missing case shells they all add up, so how did one of the case shells end up upstairs in the main bedroom. Its been suggested that one of the raid team carried the shell under his boot....if that is the case then it surprises me that the case shell left the boot in the main bedroom and not anywhere else in the house.....

I'm rambling lol