Rarely, and when I do it is similar to the instance mentioned by George. Anything more complicated would blow my mind. Your initial example of two CC/CC/A commands might be fine but swapping the target destinations would cause much confusion. I would tend to perform each copy as separate transactions. Much easier for a bear with little brain to understand.
I just noticed this thread. My habits send me this way frequently. I can even remember some silliness when I copied lines part way down a couple of times so that I could do them top down in multiples. I relish the power to propagate errors faster.