Keep it simple, once you've checked out after a duty in AIMS there is no further requirement to check your AIMS until within 2 hours before your next rostered duty.
Your assigned duty is for you to plan your rest for the next duty. After your rest period has started, there is no way for the company to force an earlier report of a next duty. They can only advice you of a delay thereafter without disturbing your rest, therefore you should check your AIMS within 2 hours before your next report, as there might just be a surprise in store
If you've checked AIMS/IVR within 2 hours before your next report and there was no change, then crewing becomes responsible to advice you of any changes
