“So you can do what with it?” (The Postmistress by Sarah Blake, p.118)
And the focus of your research right now, Charles, is what? (Woman’s Hour, Mon, 28 Apr 14, 14'18")
Can above questions, not having subject-auxiliary inversion, be used as the same meaning as their normal syntactic forms: “So what can you do with it?”, “And what is the focus of your research right now, Charles?”
I find no differences between the two forms above, yet I’ve only read in CGEL that those types have some epistemic bias towards a positive or negative answer. Or they are used when what you heard is not clear or surprising (p,881;p.886). The questions above are or can be just simple, unbiased, questions or not?