I was referring to what Bamber had it in his power to control. Such as whether or not to use the moderator inside the farm bearing in mind the noise level.
I was not referring to where his plans went awry such as when Nevill's valiant attempt to stop him resulted in a fierce fight in the kitchen resulting in Nevill being beaten with the rifle barrel and the moderator damaging the painted mantel during the struggle.
But it does indicate that whether used as a club or used to shoot, the moderator was attached to the rifle.
There's no reliable evidence re difference in noise with/without silencer. Firearm discharge within a normal dwelling ie soft furnishings etc will sound completely different from how it sounds outside in open space.
If we are to believe the silencer was found with blood, paint and a strand of hair attached to the outside we also have to believe that JB overlooked all of this despite having to turn the silencer a number of times to detach it from the rifle.
The pathological evidence doesn't support a "fierce fight" in the kitchen or anything approaching.