It did not bother him, the silence. Hannibal would have stood in the void of sound with Erik until one of them could no longer stand. Longer. If it only meant that his friend would not give up so easily on such fantastic talent. In his one little finger, the phantom held more ability than most of the people in the world beyond this Stygian place. Music was merely a portion of it, Hannibal had seen much more, possibly even some hidden gems that he had the pleasure of being the only living witness to.
His eyes closed slowly, a blink that would echo like the ripples on the lake, wandering off into the darkness. All of his relief was there. Though his breathing remained steady, his heart beat no faster, and his muscles did not tense to signify the hope he had placed in this one thing, Erik's acquiescence released Hannibal of that unseen pressure.
There was still Hope.
Despite the depth of what he was about to say, the seriousness of it, and the way that it might sound to anyone on the outside of their rather strange, intense, and unusual relationship, Hannibal did not look away from Erik. He was not the sort to ever look away from anything, least of all emotion or friendship. His sentiment was true, he wished for his friend to see the whole of it.