Hi bave1967,
Your case is different than we guys who are waiting for last almost 4 months for PPR itself. Having a Job Offer from Canadian employer and with a highly educated husband as secondary applicant really change the scenario. Moreover,they called you for an interview. So, there was no point to unnecessarily hold you when Immigration Officer is already satisfied with doc and other stuffs. Also, you had already submitted your medicals in the month of April'16 followed by one more in Dec'16.
That is why I clearly mentioned - Applicable only to outland pnp with no special cases or other canadian connections with vo as nd and MR in dec'16/jan'17.
Good Luck and Regards.