Seems it is very recent or is random - maybe just one supervisor at one set of desks and some on here went to those desks and others didn't? I thought because I was using an agent there might have been an assumption that there was "facilitation" of my extension and thus further "facilitation" could be asked, and the agents asking who did my extension (me) supports that, but others are saying they did everything themselves and got asked. The agents reaction to my "huh?" was "look it's not me, they are asking for more and more documents now" Maybe we are at the start of a new round of tightening.