So, just to update and especially for Canadian owners, I just received results and
after conversations my dealer had with Mazda Canada, they will replace the hydraulic lash adjusters on my vehicle. It took being abe to leave the cx5 overnight at the dealership when the temps went down to below -10C. They were then able to duplicate the noise I have been dealing with and agree its not injectors, air in the HLA's etc. Canadian dealerships dont appear to be aware of the Service Alert No.: SA-012/19. In fairness this alert is US based and kudos to my dealership for speaking with Mazda Canada to get direction on this.
Parts are coming from the USA which again leads me to believe it hasnt been as prominent a problem in Canada. Main thing is to be persistent if you have this noise occurring until it gets resolved.