This version of Suzy has a very distinct guitar progression in the moments before the tempo picks up. Trey plays a full on No Quarter chord sequence. The EXACT same sequence as Jimmy Page plays in No Quarter during The Song Remains The Same film. In Zeppelin's 73 Madison Square Garden version, the chord changes lead to a major rush of energy, here they do the same. It was always my favorite part of No Quarter from the movie. A very cool but subtle tribute. Hell, Trey probably played it subconsciously(because he's more than likely seen the movie 10,000 times like the rest of us)which makes it even cooler.