I think he mostly succeeded, but it felt forced to me. I never felt the need for an explicit link between the two. A bit of mystery would have added to the mythos, in my opinion.
But the biggest issue for me is the character of R. Giskard, which was stiff, forced and utterly uninteresting.
I've never read anything from other authors set in the Asimov's universe, so I have no opinion on them.