HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

AK already described the principle of how it works in such cases. The extra time needs to be skipped, and the turn should be passed.

I know. But here's a recent example – during a game, there were 2 disconnections due to the TV and 3 mod crashes – are you really suggesting spending 5 x 8 = 40 minutes just staring at the monitor?