Harlowe 3.1.0 - Embedding External Website into Twine game

Is there a way to embed an external website into Twine so that if they user clicks on a link they will be visiting the outer website, but within a Twine passage? I’m familiar with the open-url: function, but this takes the user to a new tab and I’d love for them to visit that external website without leaving Twine.

Thank you in advance for any and all help!