i have a receiver with 2 sat tuners, i want to get a monoblock lnb to get astra + hotbird. if i get a single monoblock lnb and use a loop through cable from: out tuner A ----> in tuner B ,will this set up allow me to watch 1 channel while recording from another one and watch from both satellites at the same time, or should i go for a twin monoblock lnb !

thanks