RR led a passive heart and declarer drew trumps and conceded the ace of clubs. "I would have led an active diamond there, RR," suggested SB, East. "Any rounded suit finesse was sure to be right."
"I thought about it", responded RR, "but North showed the queen with his 4D bid, as he announced, and South was sure to have the ace if he bid slam".
"DIRECTOOOOOOOOOOOOOOOOOOOOOR," typed SB. He also kept pressing the CALL DIRECTOR button furiously, causing the BBO server to freeze.
The TD eventually arrived. "How can I help?", said OO".
"There was misinformation by Enid the Emu, North, who just typed "Q" for her 4D bid, and this was misinterpreted as the queen of diamonds by RR." SB paused for breath. "There was an obligation on North to be sure that the non-standard abbreviation "Q" was understood." He concluded: "Without the MI, RR might well have led a diamond. Indeed he thought about doing so anyway".
"I don't know about that, SB" responded OO. "It seems to me that RR was even more dense than normal here."
How do you rule?