One thing is that on a number of sections so far, I've encountered what I can only assume is 60s PKP's answer to the French timetable - characterized by:
- Significant afternoon bias
- No fast trains in the morning, or only one - all the fast long-distance trains (note: for a certain definition of fast, there weren't any lines fast by modern standards yet iirc) are in the evening or night trains
- In fact, probably no trains around 10~12, or even earlier
- Yet they still stay on the right side of my criteria by pushing 4~5 pairs in the afternoon
- Then there may be no train in the late evening, but not to worry! Odds are you'd only have to wait until 1 or 2 (AM)