Final answer:
The Bodyguard Crest or Safety Vest Tier 2 likely refers to a gaming item or ability, but without specific game context, it's impossible to determine its effect on characters such as Darius or Leona.
Step-by-step explanation:
The term Bodyguard Crest or Safety Vest Tier 2 appears to be related to video gaming, most likely referring to an in-game item or ability that provides protection or bonuses to characters. However, without the context of the specific game being referenced, it is not possible to accurately determine whether it grants a Darius, a Leona, both, or neither. Typically, in-game items like crests or safety vests are used to enhance a character's attributes or to provide some form of defensive buff. Each game has its own set of rules and mechanics, and items are regularly balanced or reworked. It is advisable for the student to refer to the official game guides, patch notes, or community forums for the most up-to-date information regarding the capabilities of such an item in the context of their specific game.