User experience is the overall product experience, and it has to be taken into consideration at the product level and not at the feature level. The persona, flow learning curve, expected feedbacks, etc., should be on the product level.
How to : Engage all teams in these conversations so that everyone has a clear understanding of the user needs, limitations, and product requirements. Once they understand the user experience intuitively, you don’t need to clarify it at the task level.