Yes, DCTV! Funnily enough it turns out I followed this post all the way back in 2017: https://retrocomputing.stackexchange.com/questions/2201/how-did-the-amiga-

Yes, DCTV! Funnily enough it turns out I followed this post all the way back in 2017: https://retrocomputing.stackexchange.com/questions/2201/how-did-the-amiga-dctv-work https://retrocomputing.stackexchange.com/questions/2201/how-... and just got email because someone updated that thread yesterday :)