Thymeleaf Table issues with rowspan (1 Order, N Articles)

I'm making a simple intranet web view for a ordering system to show all orders that are currently processed. However I'm stuck with the thymeleaf markup:

public class Order {
  private Factory factory;

  private String orderNumber;

  private Date orderDate;

  ....

  private List<Article> articles;
}

public class Article {

  private String number;

  private String name;
}

What i want to accomplish is the following (with 1 order + 3 articles in that order):

<table class="table table-striped table-hover table-middle table-condensed table-bordered">
  <thead>
    <tr>
      <th>OrderNr</th>
      <th>Date</th>
      <th>Article Number</th>
      <th>ArticleName</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td rowspan="3">Order 32</td>
      <td rowspan="3">27.03.2020</td>
      <td>17442</td>
      <td>Screws</td>
    </tr>
    <tr>
      <td>023423</td>
      <td>Potatoe</td>
    </tr>
    <tr>
      <td>32342</td>
      <td>YetAnotherItem</td>
    </tr>
  </tbody>
</table>

all the common stuff should be row-spanned over all articles and the articles should be viewed one each line. However i have no idea on how to accomplish that with two th:each (one for the order, one for the articles of the order). I could "flatten" out my view (each line represented by one Line-Object) with a ton of ifs in the markup but that is a very dirty hack-around in my opinion...

Can anyone help me out with a better solution?

Thanks a lot!