jsites

If I end an advance within 1 of the bottom of a ladder, I get to climb it and place my character within 1 of the top of the ladder. If placing myself there puts me within 1 of a different, unconnected ladder, can I then climb up or down that ladder, or would that require a different move to trigger that one? I'm assuming that I cannot do this, but the question came up yesterday during a game.