Hi Douglas!
You can absolutely walk to the EPCOT bus transportation lot from the
Disney Skyliner. However, these two locations are on opposite ends of the park. The Disney Skyliner transportation for EPCOT is located near the International Gateway entrance while the bus station is located right outside of the front entrance.
The International Gateway entrance/exit is located in between the France and United Kingdom pavilions in the World Showcase. To get to the bus transportation lot from there, you will need to enter EPCOT (which means you will need valid theme park admission and a park reservation) and walk around the World Showcase into Future World to get to the front of the park.
From the International Gateway entrance, you can walk to Disney's Boardwalk area. If you are staying at a Walt Disney World Resort Hotel in Disney's Boardwalk area, such as
Yacht and
Beach Club Resorts or
Boardwalk Inn, you can easily walk to EPCOT or
Disney's Hollywood Studios.
You can also take a bus from Disney's Boardwalk area to the front of EPCOT. Depending on your plans, this may be easier.
I hope you have a magical vacation!
Magically,
Stacy