No - a split cable will never work properly so run the cable.
Satellite channels operate in one of 4 bands,
Horizontal low
Vertical low
Horizontal high
Vertical high.
H/V is switched by a 13/18volt system low/high is switched by a 22khz tone.
Suppose you want to watch ITV1 London which happens to be vertical low band. Then somewone on the other box wants to watch sky news which is vertical high band.
The 22khz tone switch will push the lnb to high band, and you will not be able to watch anything in low band until the second box drops to a low band channel or is switched off.
The same sort of thing happens with H/V
and once you get all 4 states involved it gets horribly complicated very quickly
__________________ |
|