Comments on “Reactive flows and unproductive cycles for random walks on complex networks” by R. Banisch, N. Djurdjevac-Conrad and C. SchütteB. LeimkuhlerEur. Phys. J. Special Topics, 224 12 (2015) 2519-2520DOI: https://doi.org/10.1140/epjst/e2015-02538-0