For quite some time now, Elder Brother hadn't acted together with Brother. Now that he was possessed, he could clearly sense the difference between Brother and a cultivator: it's like the same divine power, the cultivator would ponder and understand the principle of the divine power, which part of the Heavenly Track Rules it relies on. Only by understanding these things could you use it smoothly.
But for Brother, it's just an instinct. His consciousness doesn't contain so many principles, he can't articulate the principles, and he can't teach it to others. But as long as he has a thought, he can release it. He may not even be aware of what the Divine Power is. He has only one perception: I know this.
When Elder Brother possessed Brother, he could naturally use some of Brother's divine powers. But it was too difficult to learn Brother's divine powers through possession. He would have to possess and display this divine power hundreds of times before seeing a little effect.
