More tan 24 hours later I have now recovered from it. Yes it was linked to KHs, from a branch visit I guess, but surprisingly no GB member as mentioned.
It started quite good, with a lots of talk about personal freedom in matters that are not specifically described in the Bible. Such as eating meat sacrificed to idols in Korinthians. But it got much worse, when the speaker came to the subject of always obeying the faithful and discreet slave. Specially on the matter of higher education... (surprise?)
And after that I simply dropped my concentration.