I understand that CPP and OAS benefits from the Canadian Government should be treated the same as Social Security payments under the US/Canadian Tax Treaty.  They should be entered as another SSA-1099.  How do I enter payments from private Canadian pension plans?

Foreign pensions are reported in a similar way as US pensions @Gary3913. You will have to convert the amounts to US dollars, prepare a substitute 1099-R in TurboTax and claim as tax withheld in foreign taxes as discussed above.

To enter a foreign pension:

• Type "1099-r" in Search in the upper right
• Select "Jump to 1099-r"
• Say YES to Did you get a 1099-R in 2021?
• Continue past Get ready to be impressed
• On Let's import your tax info, chose the bottom option Change how I enter my form
• On How to you want to enter your 1099-R? click Type it in myself
• On Who gave you a 1099-R? select Financial institution or other provider (1099-R)
• Enter your 1099-R provider's info. For the Payer's TIN users have had success with 00-0000000 or 99-0999999
• On Enter your 1099-R details use 7 as the Box 7 Distribution code
• Do not check the IRA box. This is a qualified pension.
• On Do any of these situations apply to you? check I need to file a substitute W-2 and complete the information

Great response!!  I tried both Payer's TIN numbers you suggested.  00-0000000 did not work, but 99-0999999 did work as it accepted the number.  That form is now showing as complete with no errors.  Thanks so much for the guidance.  As soon as Form 1116 is ready for use, I will be ready to file.  I suspect I will not be able to e-file either federal or state returns, but I can live with that.