IETM has a separate purpose and CBT has a separate purpose. It’s called IETM Level 4 only but has 2d animations, 3d animations and videos plugged into this in the form of mp4 videos. If your animations are in HTML -5, then you can give hyperlinks and your CBT can be opened in a separate Tab / Window in the browser. https://www.codeandpixels.net/blog/ietm-vs-cbt-which-one-is-better/