Complex sentence: D'Silva trains Vijay and admits him to a hospital, the same hospital in which Don is also admitted and supposedly in coma, to surgically give him all the scars and birthmarks the real Don has on his body.
Split into simpler sentences: D'Silva trains Vijay and admits him to the same hospital Don is in, supposedly in a coma. He surgically gives Vijay all the scars and birthmarks the real Don has on his body.