I expect GT to get TTZB and will have different timings. May be arriving NDLS around 04:30 AM once it gets LHB rakes.
Seeing Thirukural/Dakshin/SeB/KK getting LHB rakes with TTZB GT should also get to be in the race.
To me it looks like only Kerala TT is TTZB apart from Telangana return TT. There is a scope of improvement for 02723 as well.