1.  Power Rangers Zeo continued where the MMPR Saga left off. It dealt when the former MMPR Rangers become the Zeo Rangers to fight the evil Machine Empire.  OhRanger had nothing to do with KukuRanger. It invovled a military team that used power from an ancient civilzation. They battled a race of machines.

2. The Gold Ranger in OhRanger was not an alien like Trey (gold ranger in power rangers). He was an ancient child like king who ended up helping the OhRanger.

3.  In Power Rangers Prince Sproket and Prinve Gaskey were two different caharacters. Their sentai counterpaerts were actually the same person. Gasket's counterpart was the older version of Sprocket's counterpart.