You are correct, sir. It is all very carefully planned out. However, there is very little possibility of them fouling each other up. For instance, even if he had his hand over the strings she was playing, she was fretting notes in a higher position, so unless any of them were open string notes (I don't think so), her fretted notes "overwrite", so to speak, any that he might be getting in the way of.
She is an amazing player.
And, she's cute to boot:
Her name is Anabel Montesinos, and she's 26, though in the picture she looks a lot younger (and she probably is, as it's likely an older picture).
_________________________ The Holy Trinity: Me, Myself, and I.