After 3 days from reading the first post on 17 March on FB where someone with NOC 2175 mentioned that they received an invite, I knew that this session is only intended for very specific NOCs and not for all that have been published on their website.
And yes, they must have sent invites to only a handful of candids. Maybe they strictly needed web/software developers only.
I applied with 2171, and don't think anybody with this noc would have received an invite.
unprecedented developments in these uncertain times. Kudos NB