The ČD App apparently does not get the latest updates from DB.
Car number markings and seat reservation indication missing. My seat is occupied, of course, but that's not bad, as there are like 5 passengers in the car.
Leaving Regensburg Hbf with +40 on the clock.
Once the timetable hits the border (but not the train), suddenly, the Můj vlak app gets triggered and announces an estimated +40 delay, which reflects the actual train position. There are (at least some) data being exchanged after all.
On the Czech side of the border everything went smoothly. Arrived in Prague on 22:56 with the delay clock stopping at +32 minutes.
veetech