I think I may have misremembered that until I actually went and looked at the quote. So yeah, I think your statement here describes the album, well.i thought it was mentioned that he recorded 40 hours and took the hour he liked best, so i based my comment on that.
I've messed around with some of those generative programs (not the apps, the actual programs) that Eno uses (and helped develop). I can't remember the name, offhand, but it's definitely something that takes a lot of forethought and intention.