Performing a UNION on an ElementQuery

[msbit]

With craft\db\Query we can do something like:

use craft\db\Query;
use craft\db\Table;
use craft\elements\Category;

$id0 = Category::find()->offset(0)->one()->id;
$id1 = Category::find()->offset(1)->one()->id;

$queryA = (new Query())->select('*')->from(['categories' => Table::CATEGORIES])->where(['id' => $id0]);
$queryB = (new Query())->select('*')->from(['categories' => Table::CATEGORIES])->where(['id' => $id1]);

$rows = $queryA->union($queryB)->all();

and a result something like:

  [
    [
      "id" => 920863,
      "groupId" => 9,
      "parentId" => null,
      "deletedWithGroup" => null,
      "dateCreated" => "2024-10-06 00:46:24",
      "dateUpdated" => "2024-10-06 00:46:24",
    ],
    [
      "id" => 920860,
      "groupId" => 8,
      "parentId" => null,
      "deletedWithGroup" => null,
      "dateCreated" => "2024-10-06 00:45:21",
      "dateUpdated" => "2024-10-06 00:45:21",
    ],
  ]

A like-for-like rewrite with element queries doesn't work:

use craft\elements\Category;

$id0 = Category::find()->offset(0)->one()->id;
$id1 = Category::find()->offset(1)->one()->id;

$queryA = Category::find()->id($id0);
$queryB = Category::find()->id($id1);

$rows = Category::find()->id($id0)->union(Category::find()->id($id1))->all();

The result is equivalent to calling:

$rows = Category::find()->id($id0)->all();

i.e. just returning the Category with id $id0.

How can I achieve such a union in a single element query?