The EPCOT line gondola runs International Gateway at EPCOT, passes through a station at Riveria Resort (you can stay on or exit), then terminates at Caribbean Beach resort. Caribbean beach is considered the hub. You exit there and then can choose to get on another gondola line.
There is a gondola going from the hub direct to Hollywood Studios OR from hub to AOA/POP.
Hope that makes sense, it’s pretty simple once you are there