We were at the CBR yesterday, which is bus stop 3 (1 being the furthest away from DH).
Maps doesn't show the experience of walking to the bus station well. While it certainly isn't a 20 walk for an experienced runner, I would say it can take close to ten minutes to walk to the DH entrance for the average person.
Keep in mind that the walkway isn't very large, and has a few turns. It's squeezed between the parking lot, and construction work on the other side (could it be the new bus station they're building there? it certainly looks like it).
The walk isn't pleasurable, and Disney knows it well: we counted 3 cast members along the walkway, not counting the CM at the entrance of the bus station. Hopefully they were smiling and waving at every guests.
DW told me that, hadn't we booked the YC, that provides boat transportation right in front of the park, she would probably have suggested that we cancel our other days of FPs at DHS.