嵌套的小元素

Question

具有嵌套的small元素既合法又在语义上正确吗？

例如：

<section>
  <p>[…]</p>
  <p>What particular element of the time in which they were born has an effect on their character is something for which I still do not have a definitive conclusion, but the fact is as observable as it is impossible to ignore. People born around the same time are very similar (regarding those characteristics that are based on their birth dates, and isolating them from other elements such as physique, education, and others).</p>
  <footer>
    <p><small>[Note 2]</small> In the same way that it is possible to gather certain elements of an irrational person’s character from their physique, date of birth, and name, it is in turn possible to deduce these characteristics from the observations of the subject’s character.</p>
    <p><small>[Definitive examples can be found at <small>{A., No. 215}</small>.]</small></p>
  </footer>
</section>

问题不是关于my示例在语义上是否正确，而是（在任何示例中）嵌套small元素是否在语义上正确。

Answer 1

在语法上