You are trying to keep {{ $ctrl.llmExposedWith.reranking.maxDocuments }} results, but the reranking will only receive
{{ $ctrl.llmExposedWith.maxDocuments }} from the retrieval step. At most {{ $ctrl.llmExposedWith.maxDocuments }} results will be kept.
To get the most relevant results, the retrieval step needs to return a larger pool of results than the reranking step.