I don't think its a matter of "breathing through the pipe". I clench pipe continuously from the char to the ash, an hour later. Narry a relight involved. Group 3 or 4 straight billiards and lovats, mostly. Breathing is a separate function from smoking or sipping. Clenching helps you to regulate your smoking cadence with your breathing. So that you slow down your sipping. Nursing a cool ember, to maximize flavor and prolong your smoke. To help clench the pipe I use thin rubber rings made of thin surgical rubber. I slip these on before a smoke and remove them before racking the pipe. Gives me teeth something to cling to. And saves the soft vulcanite bit. Also, when you clench you stop focusing on the pipe, and with time it'll become second nature, so you're just smoking a pipe gently, without focusing on it. The less attention you pay to the act of smoking a pipe, why, the more profound the experience. It's hard to put into words, but after a while the pipe becomes part of you, and you pay no notice to it. That's when the best smokes happen. It's a zen sort of thing. Pay no mind and the pipe will pay you dividends. I know it sounds hoky, but in practice it really isn't. Clenching is where all starts, then you just let the pipe do its thing. Pretty soon you'll be smoking a pipe just like Robert Young.