I wish you'd asked me this in 2012. I don't quite remember the exact research process that led me to that connection. I had been searching for results relating to persistent random walks using terms like 'persistence time'. But that won't give you any WLC results. If you instead search for 'persistence length', you'll get WLC results. The mathematics are identical; it's just in one model it is a random walk through time and in another it is a random walk through space.