Complex sentence: Just as Nestor shouts these insults, it sounds as if he has murdered Lord X. One of Irma's ex-pimps hears this, but he doesn't see what really happened.
Split into simpler sentences: Just as Nestor shouts these insults, it sounds as if he has murdered "Lord X". And one of Irma's ex-pimps hears this but he doesn't see what really happened.