Possible issue with 2022, cpp calculator

I just received my "notice of assessment" from the CRA after filing, they said tax calculation was incorrect.  They said I received a split pension amount from my spouse which I entered correctly as income on form T1032.  The CRA says this is considered pensionable earnings and added  CPP amount owing on self-employment and other earnings.  They say I owe both employee and employer portion.  I am not self-employed. I can't find anything in the tax guide to verify if split pension income is in fact pensionable self-employed earnings.  Is turbo tax incorrect or is the CRA incorrect?