It's a little more complicated than that; you need differing amounts of wtaer going to the reactor and skimmer, for example. I'm sure you understand that a calcium reactor gets only a tiny through-flow, not all of your flow, correct?

In general, it's a good idea to drip the reactor effluent near the skimmer input, but in a well adjusted set up it's not necessary. In general it's also a good idea to have the skimmer input and output from the same chamber in the sump, before baffles. This results in a net zero affect on the flow of your system, and as long as the water's moving well, you won't be "reskimming" sump water.