Based on the fact that using the user interface, if you copy a task to the
Clipboard and use Paste>Special, it is not possible to paste the task as a
link, I do not think that it can be done.  I note that if you Right Click on
a task, the short cut menu contains an item to Send the task to One Note
(you may need One Note installed for this option to appear).  I am not sure
if doing that creates a link to the task or just sends a copy of it.

If this is at all possible, you might be able to get help in one of the
Outlook newsgroups.