Did German air force destroy the royal air force in battle of britain?

The failure of Germany to achieve its objectives of destroying Britain's air defences, or forcing Britain to negotiate anarmistice or an outright surrender, is considered its first major defeat and a crucial turning point in World War II.[19] By preventing Germany from gaining air superiority, the battle ended the threat that Adolf Hitler would launch Operation Sea Lion, a proposed amphibious and airborne invasion of Britain.