It is probable that on his return to Cologne, having given an account of his mission, he started with the other delegates for Worms.
Writing to the coadjutor Adolf, on 6th December, Billick says that at Mainz they heard that all the roads were occupied by the enemy. In order to avoid all appearance of an embassy they left their baggage behind them at Mainz, and being advised by the vicar-general, Scholl, the Carmelite separated from his companions, and hastened on alone to Worms to present his letters to the Dean of St. Andrew’s. Here he lay hidden for four days, in the greatest anxiety and doubt as to his further progress. Neither he nor his advisers could hit on a safe mode of continuing the journey, as it was known that separate parties of defeated Schmalkaldians were making their retreat good by various roads back to the Rhine. To add to his alarm and embarrassment Billick discovered that his horse had been rendered useless by a mysterious wound, so that he had reason to think he had been betrayed. Just then, however, he received information that the imperialists were in hot pursuit of the Schmalkaldians, and having bought another horse from a Jew, he set out for Speyer. At Speyer he fell in with a nobleman belonging to the imperial army on his way back to the camp, and Billick joined him, without however revealing his name or his mission, so necessary was it to regard every stranger as a possible enemy.
At last the road to the Emperor was open, and the delegates, who all arrived simultaneously at Krailsheim on the 5th December, were received by Cardinal Granvelle. The object of their embassy was then speedily attained. Charles V. issued a mandate, ordering the Landtag to assemble at Cologne on the 24th January following; and at the date fixed two imperial commissioners appeared to conduct the proceedings.
On the same day the coadjutor Adolf was inducted as archbishop, in spite of the opposition of a large number of the representatives of the Landtag, who, however, gave in their adhesion by the end of the month. Hermann still offered a futile resistance, but on 28th February 1547 was at last forced from a position that had become untenable. He died on the 15th August 1552.


