It is worthy of note that some expressions of Yoga do not incorporate inversions into their asana practice. I have no idea the rationale behind such things for it is the inversion practice which (partially) makes yoga unique.
For me, those two poses are often part of my daily asana practice. The fundamentals of the pose (or “Preps”) are taught in level one classes until students have the opening and actions required to go up. Then they go up under careful supervision. In level two and three classes students go up often without the preps mentioned above as they already have the actions and alignments necessary for going up, staying up, and doing so safely.
In the classical Iyengar system the first week of the month is for standing poses, then in subsequent weeks, inversions, twists, and backbends. When there is a fifth week that is typically used for restoratives, pranayama, or nidra.
Since I train and study within that lineage BUT am not an Iyengar teach I don’t militantly adhere to that curriculum. Others may.
gordon