But, I don't think of it as teaching "connection" in the sense of the hind end connection, because the postion still tightens the lumbar spine (but doesn't lock it completely, as with hyperflexed horses), making it impossible for the horse to move completely underneath themself. In a sense, though, it can be used to "connect the dots" of some points in the training, whether we ask for it directly, or indirectly (for example, I'm teaching Freddy the meaning of how to stretch into the contact. Right now, he understands how to go forward and down, but he's still too unsure about stretching outward. So he appears to be in LDR position when I ask for "forward-down-out", and it will just take time for him to realize that I'm asking him to stretch into the contact, and that it's okay).
I hope that made sense.