Sadly true, always plan your trip with at least half an hour exchange, with as minimal train exchanges as possible.

Also pick train stations for the exchange where there are more options for follow up connection trains, in case that half an hour is not enough.

Additionally good luck with luggage, the new trains hardly have any space for luggage, I don't understand how they are supposed to be an alternative to cars, if the only luggage I can fit on the upper compartment is a slim backpack, under the seat, or if I am lucky fighting for a slot on the single luggage compartment in the middle of the wagon.