Playing against a forcing pass system non-vul/multiway club system vul, you hold as west [hv=d=s&v=e&s=sq5ha9843dj42ca63]133|100|Scoring: IMP[/hv]. South opens 1♥, either 5-9 not extreme shape or 10-15, 6+ clubs. You and partner have agreed to use the suggested defence given by the opps for their fert bids, including this 1♥, and so you pass. LHO also passes. Partner bids 1NT, 12-15. South passes, and you bid 2♦, meaning it as a transfer. Partner took it as a GF relay, and bid 2NT (4 spades, <4 hearts). Since partner when super-accepting transfers has never in your partnership life ever bid 2NT, are you allowed to then see that partner responded as to a GF relay? Thus allowing you to bid 3♣ to determine partner's heart length. Or would you do something else. I bid 3NT.