Forum:Reapers beyond Milkey Way galaxy?

This is a just a crazy idea of mine, I know people think that the reaper business should end. But i think they are interesting and very destructive forces. Probably the strongest force in video games. They make the alien machines in war of the worlds look weak.

Anyway, If the reapers were destroying life in the galaxy for millions of years. And harbinger was made a billion or so years ago. Would it be possible for reapers to advance beyond the milky way and attack other worlds. Their technology is very impressive, especially the Mass relays that slingshot ships light years. They even managed to hibernate in dark space undetected for millions of years. I think my theory is possible but unlikely.