In one instance during Decade's first transformation, a Dimension Wall was shattered by the activation of Decade's armor. What effect this had on the two universes that were divided is unknown, but it is likely it accelerated their convergence since the Worms on the other side came over to where Decade was. The dimensional wall was also shown to restore the corroded Decadriver and Ride Booker found by Natsumi Hikari as she handed them over to Tsukasa, allowing him to transform. Rider War (episode)