Complex sentence: After Kramer finishes watching the movie (when the woman miraculously comes out of the coma), he decides he needs to get his living will annulled, but he misses his appointment with Shellbach because he drives so slowly for fear of getting in an accident.
Split into simpler sentences: After Kramer finishes watching the movie (when the woman miraculously comes out of the coma), he decides he needs to get his living will annulled. But he misses his appointment with Shellbach because he drives so slow in fear of getting in an accident.