SEATTLE — A hockey bench is a pounding heart, pumping out players to all corners of the 200-foot rink, revitalizing and fortifying while play continues. Line changes are practiced and usually second nature to most hockey players by their late teen years, to the point of being seamless. Every once in a while, a glitch is costly. Recently, Kraken goaltender Joey Daccord launched a pass to teammate Alex Wennberg at center ice in Edmonton. Seattle’s center went in alone to tie the game. The reason he had so much open ice was because there was a line change in progress. A teammate overstepped and t…