[Agentjx]

For the sake of demonstration, here are some connections of varying quality between Heisei Phase 1 and Heisei Phase 2:

Kiva and Zi-O: King Monster
Kabuto and Drive: I am Speed
Blade and Gaim: He who fights monsters should see to it that-- uh...
Den-O and Ghost: Call forth the spirits for power
Ryuki and Ex-Aid: "It's a dangerous game we're playing..."
W and Faiz: using gadgets against an evil organization, and someone related to said organization made the gadgets
Kuuga and Wizard: both the main hero and a notable antagonist are connected to a magic stone
OOO and Decade: I like long walks on the beach and honestly just traveling in general
Fourze and Hibiki: learning from others grants the greatest of powers
Agito and Build: What should be done with the power to create and destroy?