VIDEO : 'Avengers: Infinity War' Screenwriters On Movie's Success

Avengers: Infinity War's $2 billion milestone was a meaningful moment for screenwriters Christopher Markus and Stephen McFeely. "It's nuts," Markus said. McFeely, whose partnered work with Markus dates back to Captain America: The First Avenger and also extends to The Winter Soldier, Civil War, and Avengers 4, answered the question from Kevin Smith more deeply, as seen in the video above. "I will say on the Sunday morning, when it's like 10 or something and Deadline says it broke the record, I got really emotional," McFeely said. "There is some of that but there's also most of the days trying to crack this movie that we haven't cracked yet," Markus said.