This was an interesting hands that occurred in todays round robin 12 of the White House Juniors, both rooms (Norway and France) had no trouble reaching 6♦ and both made when trumps were 2-2, via 3H, 6D, 1S, 1C and 1H ruff.
At the table I watched, the opening lead was a spade ducked to the King (dropping the Queen). One commentator suggested that the hand could make on 3-3 hearts or a club/heart squeeze, but alas there is no entry to the dummies club threat. The club Queen might as well be stranded on the "moon".
But in fact, should the contract have been 6NT or should declearer had won the first spade trick, there is still potential in the club queen as a moon threat. In fact, imagine you are playing six notrump and the opening lead is a spade (to make it easy for you I will tell you the spade king is behind the the spade ace). Do you have a play if the heart suit doesn't split? In otherwords, is there power in your Club Queen as a moon threat?
The importatn lesson here is if this sometimes two losers can be better than one
:-)

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West North East South
- - Pass 1♦
Pass 1♠ Pass 2♥
Pass 3♦ Pass 4♣
Pass 4♦ Pass 4NT
Pass 5♥ Pass 5NT
Pass 6♦ all pass--->>>
Let's change to 6NT.