Urdangarin Plaza/Milne look like the steadier, more structured pair for a FIP Gold context, where patience and error control often decide tight sets. The Chan/Chan duo can be dangerous if they speed up rallies and attack early, but that style tends to leak unforced errors under pressure. Slight edge to Urdangarin/Milne in two close sets if they keep the match in the defensive-diagonal lanes and win the net exchanges.