Dashboard embed widget

At the moment this seems to be a bit hit and miss for some of the embed sources that I envisage. e.g. Embed code from Airtable does not seem to work.

Also, would it be possible that each displayed dashboard widget has its own 'Share' url? If there are many widgets in the dashboard, it is unclear to which one you want to draw attention - would be useful to be able to include url to a widget in a Page.