The only one squirming here is the guy who thinks there was a witness named Jarvis.
Good think you have "Mytton" around to answer questions for you and make up for your utter ignorance about the case.
The gunman silently hiding in the corner while Williams ate his lunch is your narrative. You defend it.
Wrong again, Troll.
The gunman silently hiding in the corner is YOUR strawman narrative.
I'm of the opinion that the gunman probably entered the sniper's nest after BRW left the 6th floor.
For all we know, the gunman could be lurking in the stairwell, been on the other side of the floor, or taking a dump.
BTW Troll, have you decided whether any shots were fired from the sniper's nest yet ?