Adding a webform in a webform confirmation I've been given a requirement to allow for a webform to be inserted into another webform's confirmation page. 

At first I tried this with a token I could insert into the confirmation message, the form appears fine, but of course, the new webform is inside of the "parent" webform, which strips out the form tag. 

So now I have overriden a few of the webform and webform submission entities handlers, so I can write my own custom getCustomForm function, I can get the new form appearing, but the submit behaviours are weird. 

I've tried many things including:

return Webform::load(
    $webform-&gt;getThirdPartySetting('my_module', 'webform')
)-&gt;getSubmissionForm();


and 

$form['confirmation'] = [
    '#type' =&gt; 'webform',
    '#webform' =&gt; $webform-&gt;getThirdPartySetting('wwf_fields', 'webform'),
    '#source_entity' =&gt; $webform, 
    '#message' =&gt; [
        '#type' =&gt; 'inline_template',
        '#template' =&gt; $webform-&gt;getSetting('confirmation_message')
    ]
];


Is there some combination of code I'm missing, or am I trying to bend the system a little too much? 

Thanks!
Could you not just redirect after a submission so it goes to a node page that has the other form on it? Rather than trying to put the webform into the message? As that message content could be in a drupal message rather than page content