User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-10487081-20130313232701/@comment-5929284-20130313233357

I'd noticed that while re-reading, but I don't think it's to do with HoO. For one thing, he means 'the House of Hades' as in the united family of Hades, as opposed to the place in Epirus. Good spot though :)