From a consumer perspective, this is a super interesting paper because it touches on one of the fundamental issues with most RAG beyond the toy case - that you need to do different stuff depending on what the user is asking for. You also (usually) can't just ask because most users don't know that LLMs are bad at math or semantic search won't be sufficient to answer questions that involve enumeration or totality. And…
Think about how a human will draw out a conversation around answering a question and use delaying words and phrases to let them continue answering when they don't have the solution fully formulated. LLMs can use the same tactic.