Troubleshooting Span Types in Phoenix for LlamaIndex Retrieval Evals

Hi I am using the hosted version of Phoenix to collect traces from LlamaIndex. So far, I have chunked, embedded, ingested and retrieved documents using LlamaIndex. I am trying to view spans like so:

spans_df = px_client.get_spans_dataframe()

Per this tutorial, I should see different span kinds such as chain, embedding, retriever etc. but I am only seeing spans of type chain. I'm trying to do retrieval evals so was hoping to see a attributes.retrieval.documents column in the spans_df but am not seeing it. Any idea why?