at which our old dog “Danger” generally barks himself into hysterics over

[Vladv1]

"If they were to perambulate around in the nude, even the street curs would bark at them out of sheer terror. Indeed, they would be more hideous to the eye than the stuffed scarecrow that adorns a relative’s harrowed field: and at which our old dog “Danger” generally barks himself into hysterics over, whenever he gets off the chain".
Might Is Right, by Ragnar Redbeard.
To me the bolded sentence sounds off, especially the placement of the two prepositions. Could you comment?

 

[jutfrank]

There are one too many prepositions there. Both at and over are doing the same syntactic job. Does the writer get away with it? I think probably so.

 

[Skrej]

Then entire book was written to stir controversy by attacking the status quo and societal norms. Attempts at unnecessarily ornate, flowery language and grandiloquence are a deliberate stylistic choice to antagonize the reader, or perhaps to sound more authoritarian - i.e. 'baffle them with bullsh*t".

You also need to realize that it was originally published 130 years ago. People spoke much differently in those times, even when not deliberately trying to obfuscate.

The author also seemed to think himself a modern-day Machiavelli, who doubtlessly inspired at least some of "Redbeard's" thinking.