According to professional speaker Patricia Fripp, when giving a complex slide presentation, create two versions. One version is a very simple version that you will use in your presentation to introduce ideas and then explain them. The second version is a "leave behind" that contains all the details you talked about which you hand out after you give your presentation.
Leaving,
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com