What is your route?

If it’s allowed by the route planner, it’s enough. But it’s not guaranteed.

If it’s just onto a local train, and there’s another one in 30 minutes, then OK. If missing your connection is a big problem, then I would leave more time.

We’re traveling from Krakow to Prague and have a 12 minute transfer in Katowice. We can see that we can leave Krakow 30 minutes early on another train and that allows almost and hour for the transfer. Thank you very much for the reply!