Yes thanks.  I actually did that and got it working.
Later, I've started adding a task in the job itself checking to see if a particular task is running.  If so I skip to the next task, which is an email.  In the email, I check to see if the main task is running.  If so, then I send the email, if not, then just exit.  Took a while to get the conditions all figured out, but it is working fine.