Yes, plugging the BOV to offboard bailout, most often with a QC6. Male side on the cylinder, female side on the unit.I am a new Prism2 diver (50 hours or so) and my unit has the BOV plumbed to the dil tank.
Are you talking about plumbing the BOV to the bailout? Using a quick disconnect or something? Usually the training process involves handing off and/or ditch + retrieving the bailout tank.