Very confused at this FOIA response !

Basically I was a gate kid and wanted to check all boxes with obtaining records .

I receive a response (paraphrasing) saying we have 20+ pages and six min of audio. They wanted to see if they could toss the audio and just give me the docs.

I hadn't responded and they followed up for an answer and I told them of course I want the full account of it's relevant.

Anyone else have this experience?!!