In a galaxy far, far away, Han Solo and Chewbacca, co-workers and best friends, worked together to save Princess Leia and destroy the Death Star.
It could be argued that these successes would not have been possible if they worked separately. That their individual abilities could not compare to their strength as a team.
In this way, sales and marketing teams are better together than they are apart. Unfortunately, much like the dynamic duo of Han and Chewbacca, we only see truly aligned sales and marketing teams once every other galaxy or so.