I just stumbled across a collection of
related documents on a page. Using
the Linked Documents scanner of the Objects Drawer, followed by Actions->Select All and Actions->Download, worked great.
There is only one thing missing: the ability to directly download these documents into DevonThink.
Given that scanners produce a variety of different objects, I can see how this might be a bit thorny … but if you guys can find a way to make it work, that would be great