previously there were 3 slr with22 coaches , which i have confirmed from videos and also iri coach composition . now 4 slr and 23 coaches .
slr badhane se fayda sirf ek hota hai ki link / delink time kam lagta h , lekin sirf 10-15 minute bachte hain , 10-15 minute bachane se acha hai ki ek sleeper badha do .