Kinda like how Tesla famously had seen the designs for… I forgot what invention it was; the motor? The AC converter? But he saw them in a dream. But, like… He was already researching this stuff. It’s entirely possible his brain just finished the work he was already trying to accomplish while he slept. This is a common phenomena, too. Getting stuck on a problem, only to come to a solution after simply resting and not thinking about the problem for a bit.