To summarize tables, we use the summarize module's summarize function. The summaries generated by this function consists of standard summaries and narration summaries.
When querying, to rerank the results, we use this prompt to determine whether a summary is relevant or not. The prompt is designed with only the automatically generated summaries in mind, where the summaries are only about columns and descriptions of columns. If we were to have user-submitted summaries of a table (which may not necessarily be descriptions of the table's column), this prompt would not make sense.
Therefore, the current implementation of reranking cannot utilize user-generated summaries.