Here is the counter-intuitive genius of the method. After you have churned the data, Go see a movie, listen to music, take a walk, or sleep. You are handing the problem over to your subconscious. The PDF describes this as the "creative unconscious" synthesizing the relationships you forced during Step 2.
If you want, I can list practical ways to apply Immersion (sources to read, note-taking methods, timeframes) or extract the full five-step summary. a technique for producing ideas by james webb young pdf