Planner task dependencies & notification when a team task is deleted

I am integrating Planner for the management of our team and I have 2 questions:

- Is it possible to receive a notification when a person deletes a task that I have assigned to him/her? Or is it possible to see the deleted tasks somewhere ?

- Is it possible to manage dependencies between tasks?

If you have been using Planner for a long time and you have tips&tricks (workaround) I am interested

Best Regards,

V. Baumgartner