why if you have both input engaged, the Front input disconnects the Alternative input?
From page 119 of manual 7.5
Even when Input Source is set to “Alternative Input”, it won’t work when a cable is still connected to the front INPUT.
why they can not work simultaneously?
(I don t have 4 arms and I can t play 2 guitars at the same time but Sometimes I want to compare 2 different guitars and it Will be faster to have the two input always connected and working.)