Union between different dragon quests.

Hello, I have been a fan of the saga for years and the truth is that I don't usually have people to talk to in my close circle and I wanted to bring up a theory that I would have liked a lot, I have seen that there are timelines of the dragon quest saga made by fans but nothing official and yuji hori does not want to talk about this however among the story volumes given in dragon quest zenithia (the 4,5,6 trilogy) in addition to the fact that the title of DQII refers to luminaries in addition to the addition of content to make the trilogy more solid, so do you think they are beginning to draw a solid historical line between the games or is it simply an idea of ​​mine.