I know that this is already asked before in How long does producing a cour take?
But I assume that it's only related to the seasonal anime that appear once per season (except when it already has a sequel).
Does the production of the long run anime series like One piece, Bleach, HunterxHunter, Naruto, Toriko, and Detective Conan take the same amount of time?
I think this question is different from the question I mentioned before. As it only covers cours.