Rumor has it that the Zsiverians, rather than being the hyper-advanced beings they would claim to be, are rather merely a separate faction of the Transgolians that splintered off at some distant point in their past. This line of thinking holds that they simply bought the extradimensional conduit system from some more advanced race passing through the galaxy at some point in history. Perhaps it is a kernel of truth in this rumor that keeps Zsiverian-Transgolian relations chilly to this day.