Pretty sure Brennan said 'approximately'
You're pretty sure about a lot of things. How does that position even equate to "about his belt up"? Do you think the shooter had a belt around his neck? Can you illustrate it, or will you just continue to fall back on "Oswald did it, therefore he must have figured out a position like this"?
Nobody knows for sure beyond the tip of the box seen in Dillard what the exact position of the box setup was during the firing sequence. Therefore I, along with witness testimony, can claim that the shooter found a position that enabled him to aim downrange effectively and successfully claim his place in history.
Of course you can. Because you start with a conclusion and try to make the evidence fit it. Or more frequently ignore the evidence that doesn't fit it.
You are in the position of having not only to call each WC witness a liar, but also to tell us what they saw or didn't see.
I haven't called each WC witness a liar. That's just something you keep making up to avoid having to argue the actual evidence. That would make
you the liar.