Actually, I can vouch personally for the fact that from some rooms it is easier/faster to get to the Epcot back gate than to the BC bus stop.
Over Labour Day weekend, we were pixie dusted into a 1bd CL suite...which was on the third floor at the end of the building closest to Epcot, right beside the stairs.
Down the stairs, out the gate and a quick walk (2-3 minutes?) along the sidewalk and we were at Epcot.
Walking to the bus stop via the interior hallways meant zigzagging all the way through the building to the center, then down the elevator to the lobby, then through the lobby and along the path to the bus stop...taking more time than it took to get to Epcot, by about 2-3 minutes...so almost double?
The other route to the buses involved going outside and walking along the sidewalk and around to the main doors on the lake side, then through the lobby and out to the bus stop. It wasn't that much faster, but involved much less zigzagging.
We absolutely loved the room, especially for its proximity to Epcot...but the BC hallways are definitely a bit of a maze...