Screenwriters/producers Christopher Markus and Stephen McFeely (Avengers: Endgame) chat with Backstory magazine's (www.backstory.net) publisher/editor-in-chief Jeff Goldsmith (The Q&A with Jeff Goldsmith Podcast) about what it took to plot, write, rewrite, and film both Avengers: Infinity War and Avengers: Endgame as back-to-back productions for this historic wrap-up of the Marvel Cinematic Universe's amazing 22-film journey.