Obviously you have to get the mirror shield in order to defeat Twinrova, but do you really have to get the silver gauntlets?
Reasoning for thinking you shouldn't have to:
The chest isn't actually in the dungeon, it's in the overworld
This chest does not appear anywhere on the dungeon map
A lot of rules have been changed from their previous ways, and I think this one should be looked at again.
Reasoning for thinking you shouldn't have to:
The chest isn't actually in the dungeon, it's in the overworld
This chest does not appear anywhere on the dungeon map
A lot of rules have been changed from their previous ways, and I think this one should be looked at again.