I'm trying to decide which should I use. Both can inherit contextual filters, so in my case both of them are good solutions. Except that I already have the other view that I want to put together with the first, so with Attachment I would have to redo the whole other view as a new display of the first, but with View area I could just reuse the other view.
What is the concept behind them? Are there other differences than what I noted above?