Complex sentence: Spawn and Black Widow were published more than 50 years apart, and at the time of its publication (August 1940), Black Widow was not received nearly as well as Spawn, which was released more than 50 years later.
Split into simpler sentences: Spawn and Black Widow were published more than 50 years apart. At the time of its publication (August 1940), Black Widow was not received nearly as well as Spawn, which was released more than 50 years later.