I don't think the Turkish access is significant in terms of the discussions around the corridor and linking it to the rest of Azerbaijan. The discussions between Armenia and Azerbaijan are much more focused.
I would say what it is more significant for is an indication that because of the geography of the south Caucasus region and the complicated relationships between the different countries involved, it is one of the examples of how reaching a permanent peace agreement, as well as the normalization between Turkey and Armenia, would stand to benefit the region greatly by allowing for much greater regional economic integration than is currently possible because of the political situation.
I think I would look at it more in that context, but that specifically has not been as much of a focus as the issue of getting Nakhchivan access to the main part of Azerbaijan.