Finally .. first on time run ..
The main delay I suppose is that it covers almost 2000+ kms distance one way and as such SM is mandatory at NZM as No RBPC can be issued for trains running 4000+ kms in a single trip
So even if an hours delay in down run, results in RS of Up train....
more...
However, I think NR can try to slot this train with DEE YPR Duronto till ET with UBL arrival at around 10 am on third day. This will work better and Punctuality can be better maintained even with delay of 1 to 2 hrs.