digital standard isn’t as flexible when it comes to recording. If your using a DVR it’s fine but if your outputting your receiver to a VCR (even ones with digital tuners) or a DVD recorder your out of luck. You would have to have your receiver output the captions to the recording device and they’d be burnt in with no way to turn them off.
Ah - I thought there were STBs that did 708 to 608 conversion at one point to allow for TV rather than STB decoding ? These would only work on SD outputs (same issue with DVB teletext, which can be re-inserted into an SD VBI for analogue SD output and display decoding, but has to be receiver decoded and burned into video for HD HDMI outputs)
Nope. The only way for a TV to do the decoding is for it to directly receive the signal.
Analog connections SD (composite) or HD (component) don’t transmit it either. So your stuck with the converter or STB.
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.