I booked a train ticket to go from Berlin to Munich this summer. The itinerary that I booked has two connections, one in Kassel and another one in Frankfurt. This connections are on a tight timetable, but given that both train stations seems relatively small, I'm not concerned about that (at least not too concerned).
My question is, is it possible for an ICE train to change number after arriving a station? I ask this because all of the three segments of my travel have different numbers (e.g. ICE 878, ICE 896, ICE 913) but it may be the case that I do not need to change train.
Has anyone done this trip before?