Update:
Paid the local dealer $50 bucks to try and program my 2019 sensors to my 2020.
No luck, still didn't get it programmed, but I know now what the issue is. I am told the issue is there is a new sensor for 2020s only on the Tundra's with smart key option.
Since my Platinum does now have the smart key. These 2019 sensors will not work.
Since there wasn't a smart key system available on the 2019s at all none of the aftermarket nor factory sensors for 2019s will work on a smart key equipped 2020.
So in my case these 2019 sensors will never work in this 2020.