Looking for a TL: Emperor Karl VI becomes King of Spain

basically what the title says. A few years back I read a TL that had Emperor Karl VI become King of Spain and Maria Theresa as Queen. I think the main topic was on the Netherlands but can't be sure. I can't for the life of me remember the name or anything more about it so I thought I might see if anyone else remembers it and can point me in the right direction.
 
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