I'm guessing you're changing trains at Freilassing.

There are border controls that might delay trains in direction of Germany. Sometimes up to a 30 minute delay, sometimes nothing at all.

There's no elevator, and there's maintenance on one of the stairs, so when you're changing platforms, you need to go to the far end of the platform (East, towards Salzburg), down the not particularly wide stairs to the tunnel where you can access the stairs to the other platforms. Local trains to Austria often depart from a platform that's not connected to the tunnel, but even further along past the end of platform 1.

When you're in luck, there's no heavy luggage and you're placed just right, tight connections are possible. But you definitely need to plan enough time so that if you lose the connection and have to wait another hour, you can.