for example this query /search?sort_by_date=0&type=episode&len_min=40&q=star+wars
sends back results that includes episodes with an audio_length shorter then 40 mins (actually the results seams to be equal to the results from /search?sort_by_date=0&type=episode&q=star+wars)

len_max seams to work well on it’s own thought and if I include both len_max and len_min I also get the expected results.

feels like I have been questioning a lot of things so I just want to add that I think you are doing a great job generally this is definitely the best podcast API out there!