There are also other lines. And depending on what line you get, it will effect the probability for how long it will take to get an egg. I think every 100 or so steps you have a chance of getting an egg produced at the daycare. The more the 2 pokemon like each other the higher the probability on each of these chances. Even with a really good chance it can sometimes take a little bit.
Jaricko - Official Venustoise of the omniverse / bacon in the fridge for all those who cry out in hunger of the Gamefaq's 3ds boards.