dont they sell a little thing that plugs into one & sends to another....erm an av sender or something.
some of these even let you use the remote in another room.
You have two options
1 x HDMI 1x2 splitter + 1 x 15m HDMI cable
or
1 x HDMI 1x2 splitter + 1 x HDMI over dual CAT5/6 extender.
Both are viable options for all signal types up to 1080p60 - 1080p signals may require a bit of manual source control if both displays don't support 1080p signals - often the best option being to lock all source devices to 1080i.
IR control of the source over a stand alone RF cable is often the most cost effective solution with SKY HD - though you can also consider HDMI over dual CAT5/6 extenders that include an IR Passthru channel.
Long HDMI cables tend to be thick and not very pliable so not ideal if you have a complex cable route to pull them through - they don't go around tight bends very easily.
I have issues with using an HDMI splitter. Each device works on its own, but if they are both on at the same time they both blank out and i get a strange digital fuzz (almost like analogue fuzz, but not quite)
No idea whats causing it, but just warning you that a splitter probably wont work for simultaneous playback.
