bhai is train me reservation hi nahi milta hai AC me ...sirf ek 2nd AC aur ek 3rd AC lagta hai...aur Darbhanga , Muzaffarpur, Jaynagar region se mumbai ke liye keval ek hi connectivity hai ...if you dont agree...you can see the availability for next 4 months in this train...there will be waitlist only. I highly doubt ki uneserved logon ko baithne bhi mil paata hoga is train me....unless and untill koi bahut hi resourceful insaan ho.