[Edit: IMPs, 7 board Swiss matches, Sectional]
The 3♣ transfer is not alerted. Now what would you do? (No special minor suit ace asking bids.)
At the table this hand bid 5♣, and they played there making 5 exactly opposite partner's AKxxxx in clubs, and off one ace. ♣QJx was onside, but not finessed against.
The opponents suggest that this hand should be making a slam try, and that the hands may get too high, and that 5♣ while better than reflexively bidding 4♦ is actually taking advantage of the UI. Your ruling?