Delayed call for bench minor?

[JoeT]

Hockey officials -

I'm a basketball coach and former basketball official, but I have a hockey question. I've downloaded the NHL rule book, but the game I was watching where this came up was a youth game (no idea if there are different rules covering this.)

Simply: should the penalty call for a bench minor be delayed if the other team has the puck?

Specifically, team A allows too many men on the ice. The official notices the infraction while team B is on a breakaway. Does the official blow his whistle to stop play immediately, or does he delay the call (raised hand) until team A secures control?

Thanks!

Joe