Referencing separate values within a CMS rich text field

Does anyone have experience, or know whether it’s possible, to place multiple values inside a CMS rich text field and reference those values individually?

For example if a rich text field included a heading, subheading and body text, could I call only the subheading somehow?

If not, what if these elements were placed within a CMS rich text field HTML embed component with some additional code to split them?