You can also get a Shimano XTR di2 display to put inline if you don't want to add the Garmin and or D-fly . It goes in place of the front junction box at the handlebars. You can set the length of time it displays before it goes to sleep Every time you shift it will display for that set amount of time. My guess is you are hearing the chain hitting the pickup pins when cross chained like that. What cranks and chainrings are you using and how wide of range of cassette. We are using the Paxis rings and 11-36 or on major climb tours a 11-40 with our Di2 and it doesn't like the severe cross chain of the small chain ring however we can completely cross chain the large chainring without issue. Once you have it adjusted properly it shifts amazingly well.