That's not what I'm asking.
Consider:
She is the girl.+The girl said it was wrong. →She is the girl who said it was wrong.
When a relative pronoun is used, basically two sentences are combined. Now I wonder if the sentence in question is:
It would be hard if not actually senseless to specify a target +one could say that concerto A got nearer to the target than concerto B in relation to the target.
→It would be hard if not actually senseless to specify a target in relation to which one could say that concerto A got nearer to the target than concerto B.
or
It would be hard if not actually senseless to specify a target +one could say in relation to the target that concerto A got nearer to the target than concerto B.
→It would be hard if not actually senseless to specify a target in relation to which one could say that concerto A got nearer to the target than concerto B.
In other words, I'm thinking about the origin of the sentence in question.