I have a Slimline dish with single output. 1 Genie and 1 client connected (not wireless). I get my broadband from local cable company. I want to have broadband and directv on the same coax line where my genie is installed. Can I use 2 diplixers, 1 that combines directv after PS & Cable and 2nd that splits directv and cable to feed both the genie and cable modem?