Lovera, on 2022-December-18, 04:30, said:
Yes, the contract is not what even E expected. It must be considered that if the pair reaches the slam when it has a double fit, it is advisable to choose the 4-4 fit because with the other suit, losers can be discarded. Perhaps it also depends a little on the Acol system (which I don't apply) because E has a hand of 12 points:2♣ does this show directly? But maybe we meet on 3♦ which should be UCB indicating the excellent support for ♣ contract that E would have played also having the King protected on the exit of N. But having W a 5-4-2-2 and however, being at the top of the second range it was clearer to bid 4♦(=almost game) which would probably have been followed by the cue of 4♥(=12/+ points) which could direct the auction.
2♣ the way we play Acol shows 9+ points with 5 or 10+ with 4, Acol people vary exactly how much it shows but it usually around this (in very old fashioned Acol could be a little less).