I was just about to fall asleep when this hit me.
How far can Atlantis and the Pegasus galaxy really be? It took the stargate an 8th chevron to get there, but it also took the stargate an 8th chevron to get to the Asgard planet Othalla in the Ida Galaxy. Now we've seen the Asgard travel between their galaxy and the Milky Way galaxy within a short amount of time in their ships. How long could it take the Asgard to get to Atantis, mere hours? The Asgard owe so much to O'neill that they can give him and his team a round trip to Atlantis.