Maybe twenty years ago, but these days it's pretty common to have hour-long delays, or to have trains be cancelled at short notice, or rearranged such that you

Maybe twenty years ago, but these days it's pretty common to have hour-long delays, or to have trains be cancelled at short notice, or rearranged such that you won't get a connection. When traveling East/West, I'd pretty much always recommend planning a buffer of at least an hour, more if your journey involves connections.