Complex sentence: Edwards was a key component in the Cowboys defensive dominance during the late 1960s and early 1970s, and although overshadowed by Howley and Jordan, he was a great player for many years.
Split into simpler sentences: Edwards was a key component in the Cowboys defensive dominance during the late 1960s and early 1970s. Although overshadowed by Howley and Jordan, he was a great player for many years.