Complex sentence: Voyager and was completely unfamiliar with the characterizations of Tuvok and Neelix; instead, he drew upon his prior experiences with the characters' actors, Tim Russ and Ethan Phillips respectively, to successfully vie for the role.
Split into simpler sentences: Voyager and was completely unfamiliar with the characterizations of Tuvok and Neelix. Instead, he drew upon his prior experiences with the characters' actors, Tim Russ and Ethan Phillips respectively, to successfully vie for the role.