Please see the timeline below. I am not sure about SS.
Applied : Jan 2016
LVO :Ottawa
First medical :Jan 26,2017
Re-medical : Nov 21,2017
BC in progress :Nov 23,2017
Additional doc (Proof of parentage) :Nov 23,2017
Medical submitted : Nov 25,2017
Pre-arrival letter : Dec 01,2017
Medical Passed : Dec 05,2017
Passport request : 04 Jan 2018 (requested to submit in NDVO)
Ecas status changed to DM : 04 Jan 2018
Thanks,
Have you got passports back with Visa from NDVO? How many days did it take for them to process the passports?