Law 62D2: Revoke on Trick Twelve
62D2 says: "If a defender revokes on the twelfth trick before his partner’s turn to play to the trick, Law 16C applies."
I'm struggling to envisage a situation where 16C is relevant.
When the revoke is corrected, revoker's other card becomes a major penalty card, so knowledge of it is authorised to revoker's partner.
What am I missing?
(Of course we still have equity, but we don't need 16C for that.)