In real life, when you speak with each other you overlap each other, so you can't fake that. Like especially when you have no cut. In a regular film when you want people to overlap you cut it that way. It's mixing and editing.
Ego is an immature stage of development for humans, and that's what it will be recognized as when the consciousness changes on the planet. Children will develop an ego and quickly outgrow it. That's very different from developing an ego and being stuck with it for the rest of your life.