So I just picked up all three trades of Batman eternal from my library along with the first volume of Arkham Manor. This isn't the first time I've read eternal all the way through but my memory is a little hazy. Should I read the first trade of Arkham Manor after I finish the first volume of eternal, or somewhere between volume 2 and 3, or after Eternal?
TLDR, when should AM be read in relation to Batman Eternal?