Magic…Sherlock?

Okay so we all know Benedict Cumberbatch plays Sherlock Holmes and Stephen Strange, but what is the two universes we’re connected in some odd way? The way that Sherlock has his long dark coat and Stephen has his red long cloak which is sentient. What is Sherlock’s coat was also sentient? What if they are the same person? And Levi (the cloak) is disguised as Sherlock’s coat? But John doesn’t know, no one knows (((YOU ARE SHERLOCK)))