If a Revised Ranger chooses to use the Favored Foe variant from the most recent Unearthed Arcana, they replace their original Favored Enemy feature. How does this interact with their existing Greater Favored Enemy feature?
Even when the Ranger doesn't have access to Favored Enemy, do the benefits it provides still apply to the Greater Favored Enemy?
Favored Enemy (original)
Beginning at 1st level, you have significant experience studying, tracking, hunting, and even talking to a certain type of enemy commonly encountered in the wilds. Choose a type of favored enemy: beasts, fey, humanoids, monstrosities, or undead. You gain a +2 bonus to damage rolls with weapon attacks against creatures of the chosen type. Additionally, you have advantage on Wisdom (Survival) checks to track your favored enemies, as well as on Intelligence checks to recall information about them. When you gain this feature, you also learn one language of your choice, typically one spoken by your favored enemy or creatures associated with it. However, you are free to pick any language you wish to learn.
Favored Foe (variant)
You can call on your bond with nature to mark a creature as your favored enemy for a time: you know the hunter’s mark spell, and Wisdom is your spellcasting ability for it. You can use it a certain number of times without expending a spell slot and without requiring concentration a number of times equal to your Wisdom modifier (a minimum of once). You regain allexpended uses when you finish a long rest. When you gain the Spellcasting feature at 2ndlevel, hunter’s mark doesn’t count against the number of ranger spells you know.
Greater Favored Enemy (original)
At 6th level, you are ready to hunt even deadlier game. Choose a type of greater favored enemy: aberrations, celestials, constructs, dragons, elementals, fiends, or giants. You gain all the benefits against this chosen enemy that you normally gain against your favored enemy, including an additional language. Your bonus to damage rolls against all your favored enemies increases to +4. Additionally, you have advantage on saving throws against the spells and abilities used by a greater favored enemy.
(emphasis is mine)