Interesting that having an Interrogation Skill (p105) of at least Rank-1 is not a prerequisite for taking Coordinated Interrogation talent (p124) - any chance that was an oversight?
The Coordinated Interrogation talent description starts off with, " A trained Acolyte, especially when working in conjunction with fellow veteran Acolytes, can induce cooperation from even the most hardened of suspects and captured heretics. " (Emphasis mine.) An emphasis in the description on an Acolyte that is "trained" - but not necessarily trained in Interrogation itself? Has to be an oversight, no?
Moreover, the talent description finishes, "This counts as test assistance, and thus also gains the standard assistance bonuses as per page 25." But the standard assistance bonuses on page 25 require having some rank in the skill.
Has to be an oversight.