Deferred Compensation and Traditional IRA contributions

I'm single and became ineligible to participate in my company 401(K) in 2023 due to being considered highly compensated. For those who are ineligible, the company offers a supplemental deferred compensation plan and I did participate in it in 2023 to get the company match. My question is can I make a tax deductible contribution to a traditional IRA for 2023? The supplemental deferred compensation plan is nonqualified and nothing is checked in box 13 of my W-2. TurboTax is suggesting that I can contribute but I want to confirm that's correct.