Hi, thanks for asking, when I was there in person, they checked with my file #, and confirmed that my addendum was received on 30th instead of what my rep told me.
As of the processing time for Express Entry Stream, they printed out their web page on a pager and high lighted the part that shows they currently do not have a processing time for EE BC, however, they also confirmed a queue is established exclusively for EE BC, and I am already in the queue, and that's it, they seemed having hard time to share some information, but they are really friendly.
And the lady told me that if document in our file is neither complete nor meet the requirement, they will contact the applicant regarding to whatever issue they may need to fix. On the other hand, she gave complete application a "two thumbs up", and said, "you should not be worried".
my opinion, they probably do not have time to conduct interview and to call every case they are reviewing, it's depending on your case and your file completeness!
Good Luck all