“Couldnt find the interview at that location on the website. Happen to know what time marker to look at?”
Go to:
https://www.dennisprager.com/videos/
Select the “From The Show” Menu / Show Archive
Select the April 20th Show. The Dr. Zelenko segment starts at the 2:39:15 Mark. (As you Fast Forward you may see blank areas, those are the for the original Radio Show commercial breaks).