It looks like both your connections write to the same fileData object and all your problems follow from that. How to deal with multiple connections you can see relevant question asked here on SO, there's also nice blog post containing NSURLConnection subclass that addresses this issue.
Here is what I am doing, I set a counter to identify the file type to save.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.