They send you notifications on your phone about the percentage probability of making the connection.
That's a bit..........worrying!
my worst train experiences have been in Poland.
I've never had a single problem apart from almost missing a connection in Chełm. Book online before you go to make things a bit easier. The billboards are easy enough to understand too. My worst experiences have been in the UK. I've had a fair few cancellations that have left me stranded.
Honestly, I highly rate the Polish rail system.