They don't all have to be false in order for the SBT to be possible. Nevertheless, they are all false.
So let's make this clear. You are saying that:
1. The witnesses (40+) who recalled that the last two shots were in rapid succession, noticeably closer than the first two, were all wrong and what they really heard was 1...2.....3 AND
2. The witnesses who heard 3 shots and said JFK reacted to the first shot, including Dave Powers, TE Moore, Linda Willis, Nellie Connally, Bobby Hargis, George Hickey, Sam Kinney, Emory Roberts, Harold Norman, Gayle Newman, and Cecil Ault, did not see what they said they saw; AND
3. The witnesses who said that the first shot was after z186/z191 were wrong even though not a single piece of evidence conflicts with their recollections. These witnesses include Hughes, Betzner, Linda Willis, Phil Willis, Mary Woodward, TE Moore, and motorcade witnesses in the VP car, VP security car as well as witnesses along Elm: Jean Newman, Billy Clay, Georgia Hendrix, Sue Dickerson, Dorothy Garner, Karan Hicks, Gloria Calvary, Karen Westbrook.
Was Kennedy hit in the head by the second shot? Yes or no.
No. The second shot nearly hit him in the head, according to George Hickey, but just lifted his hair on the right side. One or two witnesses may have thought the second shot hit him in the head (eg. John Chism) but these witnesses were never cross-examined.
If the spacing between the last two really was shorter than the first two then Holland's conjecture could be made to fit.
But not in "rapid succession" (eg. SA Hickey 18H762), "quick succession" (SA McIntyre 18H747), "very close together" (Robert Jackson 2H159, Lee Bowers 6H287), "pretty close together" (Luke Mooney 3H282), "rather close together" (B R Williams 3H175), "one and one-half seconds" - "a much shorter time" (Sen. Yarborough 7H439), "real close" (Clyde Haygood, 6H298), "very quickly" (James Crawford, 6H172).
And these witnesses all said that the difference in spacing was quite noticeable. Many said it was about 2:1. Even if it was just 1.5:1 (7.5 seconds to 5 seconds) that puts the first shot before the QM finished the turn, with the VP car just entering the intersection and the VP security car behind that on Houston. (How could the occupants of those cars be so wrong - in the same way?)
8.6 inches inboard is more than enough.
The bullet was traveling from right to left at an angle of at least 9 degrees. Over the 24 inches between JFK's throat and the plane of the back of the jump seat, the bullet would have travelled
left an additional 3.8 inches. According to the HSCA the wound on JBC was 20 cm or 7.9 inches from his midline. If his midline was 8.6 inches left of JFK's midline, that puts his right armpit .7 inches left of JFK's midline. It has to be another 3.1 inches farther left than that. And that is assuming the maximum distance he could have been to the left of JFK, which is your best case scenario. ITEK actually said he was probably 6.4 inches left and could have been as little as 4.2 inches left. That would make JBC too far right probably by 5.3 inches and possibly by as much as 7.5 inches.
JFK's hands cannot been seen in Z223.
Right. z224.