Board Thread:Warhammer 40k Novels/@comment-27376167-20151210113237/@comment-24091837-20160416091438

The primarch who went to the Tau would have perhaps observed them from afar to begin with, making sure he & his legion were not discoverd by them. He could do so by mostly watching from his flagship in orbit, perhaps even defending the Tau homeworld by cloaking it & his fleet. Establishing a strong connection from the outset is not needed for my theory to be valid. I like to think that he had decided to adopt the Tau for whatever reason, to watch over them from afar, & intervened as covertly as possible to unite their tibes.