12260,12250 are only trains given 5 hours to cover ndls-cnb jo unse hota nahi. Rest all the trains in similar category like Lko CNB stbdi Raj gang 12424 even 12276 do cover it. And it gets late b4 tundla and cnb outer. And duronto se jada aggressive tt hai rajdhani ka. Yuva ANVT se 10 min cut hai. Still 12424 is fastest so controlling matters