I had a look on the internet regarding the maximum length of CD's if I find something interesting what pressing plants recommend or whatever. I found an older topic on Gearspace, there you can read that Sony DADC or Cinram did not recommend going over 79:10 or 78:30 respectively, Bob Katz wrote that pressing plants often made customers sign a waiver if the CD exceeds like 78 minutes, so it was a customer's responsibility if the wouldn't play properly, someone else also said good luck finding a plant that make a CD longer than 81 minutes, though there are such CD's, on Discogs there's a box of CD's with Mozart's works and multiple discs exceed 86 minutes. So ZYX may play it safe in the end, they may not want to take a risk a CD stops to play before the actual end of the last song. And after reading negative reviews about their vinyl releases, they want to make at least their CD's well. 😉