How do you chain Pokemon on Pokemon Diamond?

Answer 1

If you mean chain breed, then you need to breed a move onto one pokemon, and breed that pokemon with the pokemon you want to have the move on. Say you want a torkoal to know skull bash, you need to breed a rypherior and bouffalant, rypherior needs to know the move skull bash, making sure the bouffalant is the male, then breed the baby bouffalant with a female torkoal to have a baby torkoal that knows skull bash. It seems like a lot of effort, but it's usually worth it, you can become unstoppable! You can do it with any pokemon other than feebas, you can even do it with magicarp, believe it or not, it can learn bounce! One of the best flying type moves!