I want to take the 'Kulturzug' between Berlin and Wroclaw on August 10th 2019 (dep. 08:25 from Berlin-Lichtenberg, arr. 12:42 in Wroclaw Glowny).
As I will be attending a wedding later that day, it would be good to know how reliable this train has been recently - are there often delays, and if so how long are they?
Is this information available for DB trains?