Definitely not an easy ridge walk between them. I considered it downright treacherous. The descent was difficult at times, mostly trying to get back up to the PCT. Doing both peaks, starting from Ebbetts Pass on the PCT, then descending the rib down to Noble Canyon ended up at about 14 miles. Pretty tough day! Walked over South Silver Peak to the true summit to the North.
Spent the night at Nobles Lake and climbed both Highland and Silver Peak the next day. Saw a bear going in my direction above Nobles Lake. No register found on Highland Peak. Silver Peak still has the old register in the rusty cans dating back to the 1980's. Made my way back to the mid-point of the saddle between the two peaks and descended into Nobles Canyon. Back up to campsite and packed out. 15 satisfying miles for the day. Silver Peaks summit a tad more challenging than Highland.