I believe you may be correct on many points.
Just as someone else suggested that it was probably Burkett who arranged to go to Crawford or Waco to meet Cleland on that day.
We do not know the answers to these questions for sure.
What matters is that someone asks them, and they get fully investigated (by someone else besides Dan Rather.)
One of my biggest questions, which I implied by on retrospect realize I didn't ask in certain enough terms is whether or not it is even possible for 60 Minutes to have considered Burkett to be "unimpeachable."
I believe he HAD to have had someone with more credibility -- someone like Cleland or Barnes -- playing a role in supplying or vouching for the documents.
Knowing what has been widely known about Burkett for years, it would be the ultimate journalistic fraud for 60 Minutes to take the sole word of Burkett on these documents. It would be the absolute end for CBS News. There is no way the story could have gotten as far as it did without someone else that CBS trusted highly giving them assurances these documents were legit.