This exact story happend to me as well. Except, the destinations I went to did not stamp my passport. Officer was very kind. Gave me the same form. I went home directly from interview, printed off the itineraries of the two places I traveled to, and dropped it off at the front desk with the officer, whome put it all in an envelope and showed me what to put on the front (case number, etc.).
I called CIC two days ago. They told me that the record shows my required items were handed over to them the same day of the request, and that I should be getting an invite for oath sometime in next few weeks. He emphasised he could not tell me when, but that all the required documents were now on file. I have not received an oath letter yet. My test was July 17th. I am hopeful.