For everyone above who didn't get an answer above, I believe that the defined benefit contribution goes under "Keogh Defined Benefit" under the self employed 401k section in turbotax as this populates on to Form 1040 Line 28 which per IRS notification this is the correct place to input this number.
https://www.irs.gov/retirement-plans/self-employed-individuals-calculating-your-own-retirement-plan-...
