It's happening. I don't believe Oda created a system to show us different parts of the world just to use it only twice.
I think Oda knew Wano was going to be very long so he had to come up with something to give readers small breaks and also show what some of the other players in the world are doing.
I think Oda knew Wano was going to be very long so he had to come up with something to give readers small breaks and also show what some of the other players in the world are doing.