Yes, but it seems to normally be a cross-platform change in Hannover (see station map), and if the ICE is slightly late, they should hold the IC for a few minutes.

The only time I would be concerned about such a connection would be if I had an unmissable appointment or onward connection at the far end. But in such cases, you can adjust the minimum time for changes in the bahn.de journey planner, to give yourself more space.