Based on my tracing experience, 12560 starts trolling it post Panki/Kanpur. Bacause there have been instances when i saw Duronto crossing Tundla and SG near Balrai, difference of almost 70 km. Anyway, everyone knows the priority SG is enjoying these days. But yes, the GZB-TDL stretch is really disturbing. In fact, Duronto takes 2 hr for ALJN itself.