Please take a look at the link, which is a picture of the installation setup after I ran a check switch. I am also on the Bell network but there are no service technicians in my area of Iqaluit Nunavut.
It will work with Legacy receivers. However the lnb's do have to be Dish Pro. Dishpro stacks the frequencies which allows you to use one cable to a 2 tuner unit.
Legacy lnbs do not. And that is why you need two cables from each lnb to the switch