Have you tried dexa.ai?
Here is an example with Hubermanlab Podcast - https://dexa.ai/huberman
e.g. Q) "can you give me the complete list of questions asked by Lex in the Jeff Bezos episode"
A) gives me one paragraph and then says, "Please note that this is not a complete list of all questions asked in the episode, but only those present in the provided podcast chunks. For a complete list, you would need to listen to the full podcast episode."