Boeing thing? Beg yer pardon.
I know you didn't intend it but the boot is most definitely on the other foot. Company "B" has had free information available by post, phone, ftp and the website for longer than Company "A" has been in existence. It is knowing where to look because companies choose different ways to structure their sites. In Company "B's" mindset anyone who does not have access to dimensions is ipso facto not directly in the airline business and so probably is a civil/structural engineer or architect involved in airport design. So having a division to look after airport technology.... that is where they post it. And if you buy an airplane they give you disksets and privileged access. If Company "A" choose to do it differently that's fine. But the Company "B" information is there, and always has been ever since Icarus stuck on wings and flew so high that he didn't notice that cold air cracks wax quicker than the sun can melt it.
Best Rgds
The "E"