Swiss teams. 2♠ was forcing and implied more than minimum. Comment by the players about their own bids:
4♥: "Yes it's a 4-3 fit but may be better than 3NT if partner is empty in clubs."
4♠: "I really haven't shown my hand's true strength yet."
6♥: "If my partner can make a move towards slam, I can hardly refuse given all my controls."
Contract wasn't hopeless but needed a bit more luck than was available.
Who should have found the green card in their bidding box first?