Yes that's correct. Nolva is not good to run after a deca cycle because deca takes so long to clear your system. Nolva increases progesterone activity and putting that on top of Deca can be a recipe for gyno. Using Nolva in PCT after other nandrolones that have a shorter ester like Tren A or NPP is not a big deal because they clear so quickly. Deca lingers around a long time so using Nolva post cycle is not recommended