Final answer:
The understanding between Elie and his father likely refers to a deep emotional or experiential connection, such as mutual support or recognition of shared hardship, as indicated by the thematic elements of family and identity in literary contexts.
Step-by-step explanation:
The question poses an inquiry into the type of understanding that Elie and his father find in each other. This question appears to draw upon the complexities of relationships showcased through literature, which can be interpreted in many ways depending on the context provided. Since no specific text by Elie Wiesel, such as Night is mentioned, the clear understanding could refer to a metaphorical or thematic element that reveals a deeper connection or realization within the dynamics of a father-son relationship. The understanding could be a mutual recognition of love, reliance, hardship, or the necessity of support during trying times. Context from the given literary pieces points to themes of family, the passage of time, and the existential quests for self, identity, and one's place in the world, which can forge a unique bond and clarify the essence of the relationship between a father and a son. This understanding may also represent an unspoken link, an emotional support, or a shared experience that unites them beyond words.