I keep fucking saying this: These events aren't necessarily chronologically correct. Stop assuming that Event A happens immediately after Event B. And to Robert's point, did you really want a random fucking scene of Arya sitting on a ship doing nothing to advance the plot waiting to get to Westeros? Do you want a "3 weeks later" subtitle? The showrunners at GoT figure we're smart enough to realize that time has passed from one event to another, why don't we act like it?