If the focus is in the left or right editor, the keystrokes Alt+N,V open the “Move focus to …” sub-menu. But if the focus is in the Binder, nothing happens when the V key is pressed after Alt+N. Other shortcuts I tested work with focus in the binder.
Perhaps this has to do with the fact that, when the focus is in the left or right editor, the first Navigation menu item is “Reveal in Binder” which also uses “V” as the shortcut? That option is grayed out when the focus is in the binder.