Summary presentations of strategy projects are usually a ‘greatest hits’ of slides that were produced during the project. Copy, paste, shuffle, done.
Project working document slides are not the same as final results communication slides.
It can be good practice to write out the story behind your conclusions on 1 page. Don’t summarize the analytical work, but explain why the action your recommend is the smart one. Now go back to your slide pile. You might find that not all subjects need to be covered, not every subject needs a slide, and that the order in which you tell your story might be different from the contents page of the project working document.