In your presentation, use your presentation’s Big Idea to filter out all frequencies other than the resonant frequency.
The big idea is the well from which all supporting ideas spring, and it also is the filter to sort ideas down to the ones most applicable. Most presentations suffer from too many ideas, not too few.
Even though you explored hundreds of potential ideas and left no rock unturned, don’t convey every idea, only the most potent ones.
Keep a stranglehold on the one big idea you need to convey and be relentless about building content that supports that one idea.