Another 3NT-2 for a shared bottom. This was the evening of the failed 50-50 plays, as partner played to drop the club queen, and took the diamond finesse (both wrong). Once neither of those work, there is nothing to stop the defence running their spades when they get in (they led a spade at trick one).
5♣ is the optimal place to be, slam only makes if you finess the right way in clubs, but there is nothing to say that is the right play.
One West was allowed to play in 2♠-1 for an excellent score NS, another stopped in 4♣ for a near top. The top score was 3NT= on the same spade lead, so they must have played the clubs right.