Larian Studios Forums Baldur's Gate III Baldur's Gate III - General Great news! Height advantage not that impactful.

Well the core intent of 5e is that bonuses don't stack. The player takes the greater value that they've received. You see this throughout 5e. Examples: Temporary Hit Points from multiple sources, and Tortle's Natural Armor with Barbarian's Unarmored Defense.

Applying 5e's logic: if a player gains Advantage, Advantage would override a +2 to hit and not stack.