get your facts correct brother There was a time when Vaishali used to enter GZB somewhere near 06:10 And PR followed it because NCR didn't gave OT of Vaishali to PR and Vaishali at 06:10 is late and PR was usually RT at GZB and hence being late Vaishali used to get Oten by PR and poorva at SBB
Ps: Poorva's arrival was 07:35 at that time