Maximum time of delay before flight is auto canceled?

Hey guys,

So one of my flights overlaped and caused another one (with full paxs) to be canceled. That sucks but ok. I scheduled transfer flight to another flight’s airport starting point however my a/c will be late around 1h before the next flight departs, I guess that flight will be canceled too (that’s the last flight for the day tho). Which will make no sense, since airlines in real life can have delayes for a couple of hours before they eventually cancel the flight.

What’s the maximum time of delay before flight gets auto canceled?