@tthbaltazar@chaos.social @enfys I think this more had to do with the specific devices involved.

I remember how back in the day we were running our TV signal through the VCR so that it could record stuff, and on the first VCR we didn't have Teletext on the TV (presumably it wasn't forwarding the blanking interval data, assuming it to be empty?) but on the VCR we got later it suddenly worked because it was presumably Teletext-aware