In a Multiverse scenario (or an in an infinite Universe scenario) then yes, this DID happen. There is even a universe where Gus had a Plan B. Not sure yet if there is (in this infinite existence) a parallel universe where Hyypia managed more than 3 league wins...
Ok, so dredging up my degree courses, as I recall the Andromeda Galaxy, being the largest member of our Local Group of galaxies, is about twice as big as the Milky Way, and we are due to merge at some point in the far future (10 billion years?). The average density of stars in the Milky Way is...