No need to Bypass GTL if we take consider bypass lot of trains will have Loco reversal change at Hubli station.First some trains have bypass Hubli without touching Hubli station will you agree definitely ?no will agree to Bypass Hubli because it's biggest city.Guntakal is the 3rd biggest junction and highest revenue divison in south central railway.Lot of trains will arrive before ontime at Guntakal LC is not a issue.Every train have a Slack time to cover late hours.