I earned interest in 2020 from the July 15 extended tax filing date. Do I have to pay taxes on that interest? I never received a 1099 from the irs.

In 2020 I had an overpayment so I was due money back from the irs and state irs.  I filied in July before the exteded July 15 covid deadline.  After receiving my regular overpayment I later received interest earned from the delayed filing.  Do I have to pay taxes on this?  I never received a 1099.