Duplicate title deletion

There are two pages for the Cold true crime podcast (https://thecoldpodcast.com/). I wish to delete the following: https://www.imdb.com/title/tt20048802/ It is a duplicate of https://www.imdb.com/title/tt15017544/, which includes all of the same content and much more added details. There is no option submit a title deletion for the title which is why I am bringing the issue here. Thank you.