From the 1st video VE SimonAndre posted, it appears that the CAN gateway device is connected through the OBD2 port while the original battery is still installed. 5 flashes of the 1st charging LED will confirm that the Can gateway is programmed. Then it is put between the new battery and the vehicle.
I contacted VE Simon Andre to request information on the battery upgrade. They have a registration form on their web site.
I received an immediate response that there are no 62 kWh battery packs currently available, however there were 40 kWh packs or I can be notified when a 62 kWh pack becomes...
Not exactly Montreal, but Trois-Rivieres, about 140km northeast towards Quebec City. This is interesting news. I've been there to recharge on their level 3 DCFC. I'll make a point of stopping there again to find out more.
Costco US has the Siemans Versicharge Lvl 2 charger reduced until Sept 2nd to $390 US.
If you have a friend in a border state, order it for delivery there and then pick it up.
www.costco.com/.product.100295506.html