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This was obviously a thing pre-TV... you might even say it's the intended/correct way to arrange furniture
Not entirely? This is a random picture (of Chatsworth), but the idea is that sofas face each other so you can have a conversation, rather than everyone looking in the same direction.
The centre of the circle there is the rug not the chimney breast.
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Yeah I did think of the 'conversational' arrangement but in more modest front rooms, it's hard to have seats not face the fireplace without wasting your precious radiant heat on warming the furniture instead of you. The seating still faces each other - side facing side or around a corner, but also with a view of the fire.
This was obviously a thing pre-TV... you might even say it's the intended/correct way to arrange furniture