That connection was made during SC installation. The easy way to do it is to grab the hose with pliers and force it onto the barb. This can damage the hose.
The way I've done it on the 2 SC I've installed is to replace the hose with a longer high pressure hose, and repoint the fuel barb in a more accesable direction. It also makes it more visable for leak checking. Its not as neat and tidy looking, but I think its safer. It also gets the hose more away from EGR heat.
John C.