Many thanks to @patrickphillips for tweeting the news!
Keanu Reeves will be a guest on a special edition of the Patrick Phillips Show on Wednesday, September 25 at 7pm. Mr. Phillips tweeted that he had interviewed Keanu at the Fantastic Fest on Saturday night, so it will most likely be this interview that will air. From the advertisement, it appears that Keanu was asked about directing for the first time and also about Bill & ted.
The Patrick Phillips Show website is here. His ‘About’ page says that his show can be listened to on 1370AM KJCE. The radio station’s website is here and there is a ‘listen live’ button at the top.