Yes that is the reason I thought they may take 6 more months to complete HPT-Koppala. Even tracks are laid on Tungabhadra bridge, just they have to connect HPT side and Munirabad side, but they can drag it more sadly. Unless pressure is put, looks like they wont commission fast though its at the final stages.
Actually when I had travelled in Dec 2016 in this route, that time itself I thought they can easily complete within 2years, but still till now only Koppal-Harlapur is done.