I think cappytan has it right
"As an undercover fader, here is myparanoid speculation (emphasis on the paranoid): they knew you know TTATT and were seeing if you would say anything incriminating."
They could have been setting a trap for you. If you told ttatt to your wife she may be so concerned for your "spirituality" that she brought it up to the CO.
What is your position in the congregation anyway that you had lunch 2 times with the CO's and COWS? Usually those spots are reserved for the elite. They are on to you and you played your cards right by not saying too much.
I have an asshole brother in law who is an elder. When I see him at family gatherings he always brings up something to me about 1975 or circuit overseer pensions or child abuse to get me to bite. Good thing I can see through his bullshit.