The mission was colloquially often known as Apollo 1; the crew even had company acceptance to get a mission patch spending homage to the flight’s foremost place between manned missions. This freed up at least 1 Saturn V, permitting the wet workshop to get replaced with the "dry workshop" https://ambiqapollo421098.blogacep.com/39521212/apollo-4-plus-can-be-fun-for-anyone