Trying to send all annotations to clipboard

I am writing a keyboard maestro macro to process PDF annotations according to my needs using regex (with very nice results).
I basically have to copy all annotations to the clipboard, and from there, I can do all my processing.
If I select PDF in Doc list → ⌃6 I am in the Inspector Annotations Tab.
From there I simply have to to to the actual annotations in Content → select all annotations → copy
My problem is that I cannot find a way to navigate using a keyboard shortcut from annotations tab to the actual content where I can select all annotations → copy.
I tried the tab and arrow keys.
thank you very much.

There is no keyboard shortcut to move the focus to the Annotations.

OK, thanks. I will use a move cursor and click action.