We were just at BWV at the beginning of Sept, and did not share a bus with BC for the MK. We shared with Swan and Dolphin, but not BC.
Coming back from AK, we shared a bus with S/D and BC. BW was the last stop, BC was the third after S/D. It was not fun to have to get through all of those stops just to loop back to BW. We ended up getting off at the first stop (not sure which is which, S or D) and crossed the bridge to the BW from there on our next AK visit. It probably cut off at least 10+ minutes of bus time.