Jeffrey Quill only spent 19 days as a combat pilot, so he wasnt aware of day to day operations. What he says is true from his experience, but things changed in October. It is also true that Spitfire pilots spent more time on patrols than in combat, even in 11 group.
During the Second World War, Quill was in charge of development and production flying, a job that he took very seriously – so seriously that he felt he must obtain first-hand combat experience. He was temporarily released on 5 August 1940 to join No. 65 Squadron at RAF Hornchurch, privately hoping that it would be a permanent appointment. On 16 August he shot down a Messerschmitt Bf 109 and two days later he shared a victory over a Heinkel He 111. His combat days were short-lived because he was recalled after 19 days, but they made Quill all the more determined to make the Spitfire an even better fighting machine.