I think that in DL it's POTC, HM, and Roger Rabbit. In DCA I know for sure that Grizzly River Run is not connected. At least that was the case when I was there three weeks ago. Also, the two parks are not connected at all. At one time I held FPs for GRR, Soarin', Roger Rabbit and Indy all at the same time, all with windows close enough to each other that we did all four in the space of little more than an hour.