Same rhythm and chord "transitions" in the selected bits. But that's incredibly common with Brian May or any rocker for that matter.
Gotta add MY LIFE HAS BEEN SAVED as well. (The outro)
My ears aren't as astute as far older and more experienced guitar players (haven't played realistically in about 2 years)
But that's akin to a drum fill.
Is it Amaj -->Dmaj9?
it's not just A maj to straight Dmaj is it?
Brian also used Amaj--> Bm7 often.