In any satellite installation whereby there’s the need of two different satellites signal on two separate decoders, the first thing you need to do is to find a way to combine the satellite cables and channel the signal into one cable.
You can channel the satellite signal into one cable with the help of a DiSEqC
In this installation you are dealing with two satellite receivers and you have to find another method to share the signal on each receiver. You can share the signal with the help of a signal splitter.
THE VIDEO BELOW ILLUSTRATE HOW TO CONNECT 2 SATELLITES TO 2 RECEIVERS