To be concrete, I have Gregor leaving Harrenhal on the 5th. (Note that this implies still working communication between the Crown and Harrenhal's ravens.) Arya kills the Tickler on the 7th. (Sandor is wounded.) She then leaves Saltpans after six more days of travel (we know that interval, the book says so), on the 13th. Oberyn dies (according to my calculations) on the 12th. That's all pretty plausible, distance-wise.
As an aside, the greatest timeline mess is Jaime's journey from Harrenhal to King's Landing, which takes from before the Red Wedding (remember he talks with Roose) until after Joffrey's death. It simply doesn't work. (I am very tempted to move the Red Wedding forward in time. But remember that after the Red Wedding, Tyrion and Sansa wed, Oberyn arrives, etc. This is a topic for another thread and another time, though. )
For the present discussion, my above reasoning is enough, and does not appeal to the Red Wedding at all. Gregor's travels are enough to get everything into sync.
The Trident moved, 60 or 70 years ago (IIRC). What happened then? Is this just natural erosion (which certainly happens) or are we to read more into this? Was Summerhall 60 or 70 years ago, by any chance?
As our heroes approach the inn, somebody wonders if the smith is working on another iron dragon. It may be coincidence, but King Robert was "Iron".
Edited by Happy Ent, 13 April 2006 - 11:27 AM.