As much as Alfred is telling Herbert to have patience, he's starting to struggle to have it himself - especially the way that he's MOANING, the things he's SAYING -

He moans a little himself as he finds a rhythm with the roll of his lover's hips, sliding in a second finger the moment he seems relaxed enough.

"I swear, I could nearly get off just...just listening to you, Engel...like this...."