we have been consoling ourselves with all such theories about TN, but reality is TN is slowest in its group of trains now, i can't talk about priority anymore, but TT design is such that it stays ahead of trains and then gets overtaken one after the other, as i see it because there aren't enough loop lines for an earlier OT (we need to factor freights as well). Most likely TN will run with this schedule only post regular run as well but i will wait for it. PF3 has been generally given to trains taking NZM route due to interlocking at NDLS, as earlier TN used to depart from PF 12 (the entrance PF of NDLS, now we have 16 i guess)