Hi @MLeCornu,
As far as I can tell, the LinkedIn Sales Navigator integration only syncs information into the LinkedIn Bio contact property, not the Company name field. This was also discussed before here.
The information would have update with a contact property to trigger a workflow and notification.
You could set up a contact-based workflow to notify the contact owner whenever the LinkedIn Bio changes. Not the same but potentially also useful:
I don’t have an active LinkedIn Sales Navigator subscription to test this but according to the documentation and earlier discussions, it should work.
Best regards!