For all purposes involving use of points and reservations, AKL is one DVC resort. If you are an owner at AKL, whether it is Kidani or Jambo on your deed, you have the 11 month window for both buildings. Moreover, if you stay at Jambo, you have use of all facilities (such as pool) at Kidani and vice versa, with the only thing dividing you being the 1/2 mile trip between the front doors of the buildings.
There's a shuttle van that takes you door to door (as opposed to the bus loading areas). We stayed at KV and used the van often. It was really convenient, and you can take your stroller with you in the van. The van runs on ~10 minute intervals so you never wait for long. The walking path between the two is nice. It runs along the edge of the parking lot but not in a high traffic area. We saw tons of lizards in the plantings along the path, so my daughter preferred walking over the van.