Partner led the diamond K. playing standard attitude I did the best I though I could by playing the 5.Partner switched. Declarer ran the heart J to my Q so all's well that ends well.
Partner was worried that declarer held AJx in diamonds, certainly possible. Of course with the cards as they are, I could have helped by playing the J at T1 and maybe I should have, but it seems that could go wrong.
Now to my issue: I thought that it has long been standard to lead the Q from KQT9(x), asking partner to drop the J if he holds it. But BBO gives us some default cc''s and I decided to check. The default BBO cc for 2/1 advanced seems to not give a table of opening leads. The BBO cc for SAYC lists the opening lead as the K. The ACBL convention card editor by Lee Edwards has the opening lead as the Q, and although I do not have an ACBL cc from a tournament handy, I am pretty sure that the Q is in bold on it just as in the online editor. My memory tells me that this became standard sometime in the 1980s, but that's just my memory.
So I ask:
Is it your understanding that, when the lead agreement is"standard honor card leads", the lead against NT from KQT9(x) is the Q asking for a drop of the J?
Partner and I are congenial, he and I can come to an agreement here, but I am simply wondering what people think of as "standard honor card leads".
Note: The bidding was P-1S-P-3NT-all pass. EW were not at all a regular partnership. W felt his 3NT bid showed his hand. E did not. Presumably most people would convert 3NT to 4H no matter what they thought 3NT was, but that didn't happen.