The author obviously struggled to give Hayek equal billing in this book, despite the vacancy of application, thought and proof in the Austrian's theories. There wasn't actually a clash between the two - there was some letter exchanges and a bit of reaching out by Keynes to help a newcomer to the field. But Hayek was obviously deferential to the founder of modern economic theory. It was only later in Hayek's career, after Keynes was gone that the Austrian pretended to take Keynes to task by mischaracterizing his economic theories and tilting at strawmen like a knight practicing for a joust which would only happen in his own mind.