In a longer, complicated sentence where one repeats the subject, verb and object, does one invert only the first svo or all of them to create a question? Or maybe both cases are correct with a slightly different meaning?
The example which motivates my question is:
"Could You estimate, very roughly, when You could send the samples?"
"Could You estimate, very roughly, when could You send the samples?"
My boss insists to use the first form, but he is French native speaker... so let's say that I don't trust his English instincts too much ;)