I now have cablevision with a very good SA brand HD DVR. Switching to Fios only because I'll be saving some money each month (Cable would only reduce rates if I reduced service.) Getting HD STB from Fios (for VOD channels) and bought HD tivo (I already have an expander that will work with the Tivo but not the verizon dvr.) One source of confusion--on the SA box, I can record 2 shows while watching a third. Can I do the same with Tivo? It is not clearly stated in all but one faq page I found.