Us case mein upto CNB timings change karna chahiye tha. 12424 aise hi late nahi rehti kyuki wo 4 baje hi nikal jati hai Delhi se. Jab tag fog ho, us se pehle kat leti hai wo NCR se. And NFR mein fog se utna bhi delay nahi hota.
One more thing to notice is that Rajdhani is regularly diverted between KNE and KIR. Means MFA-KIR short route nahi le k long route via KDPR-LAV ho k ja rahi hogi gadi.