Insert an external iframe in a presentation

We have been using Smartsheet for scheduling purposes for a while now. It is a dedicated tool, a lot more advanced than the release scheduling features Aha! offers (no offense!), thus we stayed there.

It allows me to publish a Gantt chart of the diverse projects, and provides iframe code to embed it wherever I need to.

Would it be possible to embed it in a notebook? Otherwise, I will just copy-paste a snapshot, but I would lose all the beauty of the notebook: never ever have to worry whether your deck is up to date! (just love it!)

Kind regards,

Ben.