Quite frankly, Bruno had missed much of what the Tsar had said. There were specific battles named for each award granted to him, as well as campaigns, such as his involvement in the Ingria, Volga, and counter-insurgency campaigns.
Bruno was still flabbergasted by what this all meant. He was no longer just the 9th son of a German nobleman. Instead, he was granted permission by the Tsar to display his own coat of arms and to name his own noble house, of which he was now the head.
In fact, if Bruno really wanted to, he could change his name on Russian documents and the name of his house to blend in with the Russian aristocracy. It was truly a strange thing, as his loyalties were first and foremost to the German Reich.
No doubt this was a scheme by either the Tsar or someone far more cunning behind him to bring Bruno closer to the Russian Empire. Either way, he had no choice but to accept the words and thank the Tsar for his benevolence, which is exactly what Bruno did.