Two trains are uncomparable, the former is like just SF were as the later is among the fastest few trains on IR network.
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Trn.No-Frm-To----,Distance,JrnyTime,Avg.Speed,No.s tops
12215-DEE-BDTS,1425km,22:32hrs,63Kmph,15stops (4 days a week)
12910-NZM-BDTS,1367km,16:35hrs,82kmph,7stops (3...
more... days a week)
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Above arrangement need 3 rakes. and with 3 rakes following services can be provided
Making 12910/11 a daily train- 2 rakes
Running triweekly JP-AII-ADI-BRC-ST-BDTS triweekly GR with 1 rake.