How to edit block in sidebar widgets & sync?

We can insert the pattern into sidebar widget which is good. Don’t see any way to edit the pattern/block after it’s been inserted into the sidebar, wp > admin > appearance > widgets > select the block > it just shows in a black and white box showing the selected pattern… would be cool if we could edit/update the pattern/block and sync it with the corresponding ID reusable block.

What’s the difference between pattern and “converting to block”? They both seem to have the same behavior with regards to how they are treated in the sidebar widget.

Thanks