Same thing happened with me. I've sent through Canada post and documents are delivered on Jul 5. I called BLS Brampton today and agent told me same thing. Agent said if documents are delivered to officer directly then it my get process soon otherwise it will get delayed. He also said Canada post usually deliver documents to their drop box or reception. In that case it will be picked up or processed after 15-20 days or later. No concrete response from them yet.Today I call BLS center to tell them about my mistake to send my application from Canada post, they told that nothing can be done, we process Purolator applications first and once all are completed, we pick Canada post applications