Walkthrough:The Legend of Zelda: Oracle of Ages/Xykeb Zraliv/Linked Game Differences

So here are all the things you'll encounter if you're playing a linked version of Oracle of Ages.

The beginning
In the beginning of the game, you will start with 4 hearts instead of 3. Also, Ralph and Nayru will say that a message was sent that you would arrive.

Twinrova
At various points in the game, the game will cut to a scene with Twinrova. Also, the "hooded figures" throughout the game will not appear, because we already know that they are Twinrova.