In a recent team of four contest with screens the hand below had the following bidding in one of the tables:
East South West North
Pass 1NT Pass 2♣
Double 2♥ Pass 3♣
Pass 3NT Pass 6♣
Pass 6♦ Pass 6NT
All pass
South’s opening was 12-14. North bid 2♣, Stayman till further notice, and East doubled. North asked his screen mate if the double meant ♣, to which the answer was “no, just general take-out”. North then asked again “does it ask for a ♣ lead?”, to which the answer was again “no”. As the tray went to the other side, South’s screen mate, when asked about the 2♣ double said it was “natural”, showing a ♣ suit. South bid his ♥ suit and North bid 3♣, alerted and explained as second Stayman. South then bid 3NT which he intended as stopper showing, because he thought that if East had ♣, as it was explained to him, there was no point showing ♣. North was befuddled by the 3NT bid, as it would show a 1-4-4-4 hand by South (South’s answers should have been, as per system, 2♦ - one unspecified 4 suit minor -, 2♥ - no minor -, 2♠ - ♠), but with his monster hand he wanted to play in a slam, so he bid the cheapest slam, “knowing”, as per the explanation given to him, that his partner would interpret it as to play. South, alas, imagined differently: picturing a long ♣ suit on his right he “corrected” to 6♦ which North, in turn, corrected to 6NT. Down 1.
The question is, were N-S damaged by the different explanations on either side of the screen? If so, should the score be adjusted?