I think it was https://aclanthology.org/2022.tacl-1.49/ https://aclanthology.org/2022.tacl-1.49/ But am now thinking I may have made a mistake, with this showi

I think it was https://aclanthology.org/2022.tacl-1.49/ https://aclanthology.org/2022.tacl-1.49/ But am now thinking I may have made a mistake, with this showing they can be simulated in TC^0 when I thought the result was both that and that they can simulate TC^0 .