[schnevets]

Observe a trivia night focused on a specific TV Show (like Simpsons or Seinfeld trivia) and you'll see this phenomena en masse. People make connections based on plotlines, celebrity guest stars, or even head writers on episodes and then can drill down to a precise line of dialogue or gag.

The same thing happens with die-hard sports fans. You ask "Who was the rookie points leader on the 05-06 Toronto Maple Leafs?" and a sports nut can start piecing together how the team did that year, who was on their roster, and finally derive an educated guess.

[borski]

For sure! One of the hallmarks in how ADHD often presents is also hyperfocus on things they’re particularly interested in, which also exists in non-ADHD folks sometimes of course. Paul was clearly curious about everything, and hyperfocused on a few things (music). Get Back is a great thing to watch to see this in action; his brain flies from idea to idea, until he lands on one he is imminently curious about and then that’s all he talks or thinks about for hours.

[Bakary]

It's not so much hyperfocus as the inability of the executive function to unswitch