Yeah, Burrows is rather new and is one of the best VNs i came across. One more thing i thought of is that the Khenbish scene having so much interaction goes with the theme of indulging in excesses, so if you didn't do that in purpose you can claim that was the intention the whole time.
Not wanting to intrude or anything, but I felt the length of the scene was warranted. Put it in the context of Khenbish thinking back on a moment in time, a "missed opportunity", fantasizing about how his first sexual experience could have been, all the different things he wished he could try and all that. I specially like how the scene builds up, starting shy and exploratory slowly gaining confidence and gathering momentum for a satisfying climax.