Yn y llythyr hwn, mynegais ein siom mai dim ond pythefnos o drafodaethau gwirioneddol a gafodd Llywodraeth Cymru ar y mater, er inni geisio ymgysylltu â Llywodraeth y DU dros sawl blwyddyn i rannu barn ar fodel a ddatblygwyd gyda phartneriaid yng Nghymru a'r OECD ar sut y dylid gwario arian newydd yr UE yng Nghymru
In this letter I shared our disappointment that the Welsh Government had only two weeks of genuine discussion on the matter, despite us trying to engage with the UK Government over several years to share views on a model developed with Welsh partners and the OECD on how replacement EU funds should be spent in Wales