The infinite scroll pattern provides a way to load content dynamically on user scrolling action.
Let's focus on the final row (or the last element of your content):
<tr hx-get="/contacts/?page=2"
hx-trigger="revealed"
hx-swap="afterend">
<td>Agent Smith</td>
<td>void29@null.org</td>
<td>55F49448C0</td>
</tr>
This last element contains a listener which, when scrolled into view, will trigger a request. The result is then appended after it. The last element of the results will itself contain the listener to load the next page of results, and so on.