SamyGO

I wouldn't trust those reviews then! This is definately not supported, and may be a hardware limitation of the TV: I suspect that although there are dual tuners (frontends), there is only one video-pid/audio-pid filter (demux).

If Samsung could be bothered to implement it, the hardware configuration as described may well be capable of viewing a second channel while recording, but only from the same tuner && transponder as the one currently being recorded.