Complex sentence: Notably, they look almost alike, except that "Father" seems to have aged a great deal more, and even more interestingly, Hohenheim addresses the souls in the Stone he takes from his body by name.
Split into simpler sentences: Notably, they look almost alike, except that "Father" seems to have aged a great deal more. Interestingly, Hohenheim addresses the souls in the Stone he takes from his body by name.