This is a really great experience. Thanks for sharing!
As an undercover fader, here is my paranoid speculation (emphasis on the paranoid): they knew you know TTATT and were seeing if you would say anything incriminating.
This is how I feel all the time as an undercover apostate. I always feel like the elder boogeyman is lurking around the next corner or dissecting everything I say to find "evidence" or a "second witness" to my apostasy.