I'll speak for both of us, Yes we are Inland applicants.
I am not 100% sure what info sharing means, but there are other threads that have explain backgrounds checks, security, etc...
For my understanding, Info sharing could be, IRCC contacting other agencies to try to find any relevant information about the PA.
I am on my 20th month, still waiting...………...
Just found this explanation
https://www.canadavisa.com/canada-immigration-discussion-board/threads/info-sharing-explained.537342/