This is the only thing Corbett has posted that is of any significance:

"We also don't know where Oswald was during the time BRW was at the window. He could have been anywhere on the 6th floor and not have been seen by BRW, and he might have been pondering his next move if BRW had remained at the 6th floor window. He might have been contemplating whether to move to the 7th floor if BRW remained in place."

This is a significant shift from the usual Oswald-hiding-in-the-SN nonsense.
The one thing we can say with any kind of confidence is that Oswald WAS NOT in the SN...but that's not really the issue.
The issue is that it has been demonstrated, beyond any reasonable doubt, that the WC Sham fabricated and omitted key evidence in order to create the narrative that the last time Oswald was seen was on the 6th floor, near the southeast corner, the scene of the shooting.
In order to create this false narrative all testimony and statements regarding the elevator race had to be wilfully omitted as this revealed Oswald was trying to get down to the first floor with the floor-laying crew. Eddie Piper's testimony also had to be wilfully omitted as this revealed Oswald did in fact go down to the first floor and was there around 12 noon.
The numerous statements by Bonnie Ray, that he was on the 6th floor by 12 noon, also had to be omitted from the WC Report.

To replace all this first-hand testimony, the story of Givens going back up to the 6th floor and seeing Oswald there, had to be created.

The reason this new narrative had to be created was to give Oswald time to organise the SN and assemble his rifle (it took an FBI weapons expert 6 minutes to assemble the rifle). With Oswald on the first floor at 12 noon and Bonnie Ray up on the 6th floor at the same time, there was no time for Oswald to assemble the rifle in the SN before Bonnie Ray was up on the 6th floor. Because Bonnie Ray stayed up on the 6th floor for so long, there was no time for Oswald to assemble his rifle in the SN before the limo arrived in Dealey Plaza.

As Corbett speculates - Oswald could have been anywhere on the 6th floor.
He seems to be admitting that the man with the scoped, high-powered rifle spotted by Arnold Rowland might have been Oswald. However, this is more testimony that the WC Sham had to omit. The way Rowland's witness testimony was treated by the WC Sham is it's own scandal. Rowland's observation of the man with the rifle should have dictated the narrative of Oswald's whereabouts in the moments leading up to the assassination. But Rowland's testimony had to be ignored because it held a revelation far more important than the man with the rifle.
Rowland was absolutely insistent that there was a black male in the SN from around 12:15pm until a few minutes before the limo arrived in Dealey Plaza. This was more testimony that had to be ignored.

You start with the silly assumption that the time estimates given by various witnesses are spot on accurate. Why would anyone assume such a thing. People don't mentally time stamp things they observe. Why the hell would they? If somebody says something happened at ABOUT 12:15, that could mean 12:10 or 12:20 or sometime in between or outside of those times. To be fair, it is a common practice in the discussion of JFKA for people to accept estimates as fixed times. I've also seen LNs do this as well. I've probably done it myself a few times over the years. The simple fact is that if so-and-so said something happened at about 12:15, we really don't know what time that event happened.

Furthermore, even if these time estimates were spot on accurate, it would not preclude Oswald having fired the shots at 12:30. If Oswald was on the first floor at 12:00 and BRW was on the 6th floor until 12:15, that still leaves the 6th floor all to Oswald for 15 minutes prior to JFK's arrival in Dealey Plaza. Plenty of time to assemble the rifle if he hadn't assembled it already and stack the boxes that formed the rifle rest.

This entire thread is much ado about nothing. I guess after over six decades of futility in trying to find real evidence of a conspiracy, the CTs are getting desperate to find something of significance. Instead they kept coming up with nothingburgers.

"Wiegman" is definitely lying on the steps, there's a clear shadow under him and in the following GIF, he has not moved forward in relation to the sign.



And at the end he's in the process of getting up!



JohnM

 Hi John,

 Many, many thanks for posting your superb work on the Bell film, re: Wiegman!

     

The impact of a decade's long propaganda campaign on the feeble-minded TDS types is scary.

Donald J. Trump gives corruption a bad name.

I'm sure Oswald did plan to take his shots at JFK after the limo was clear of the tree. That would not preclude him from giving himself an extra chance with a more difficult downward shot before the limo went under the tree. We can debate whether that made sense for Oswald to risk an early miss, alerting the Secret Service before taking the easier later shots with the limo moving almost directly away from him, but that wasn't our decision to make. That was Oswald's decision to make. Since he succeeded at what he was trying to do, it makes no sense to me to second guess his choice.

How could O make an upward angle shot at Ks back? Slug went on to make the dent by the mirror, above everyone's head?? How did O shoot JC through the back while he was turned looking back? How did O shoot K in the head from left rear to right front? Explain that.