Rydym hefyd yn galw am i Lywodraeth Cymru gael cadw ymreolaeth dros ddatblygu a chyflawni'r trefniadau dilynol – hynny yw, gofyn am barchu datganoli, mater y pleidleisiodd bobl Cymru drosto ddwywaith.
We are also calling for the Welsh Government to retain autonomy in the development and delivery of successor arrangements – simply asking for devolution, voted for twice by the people of Wales, to be respected.