Offence (blue), line out in one deep line.
Defence (red) - opposite in a straight line, slightly inside player you are marking.
Offence endeavour to pass ball along line.
Defence move up to stop them. Each defender goes up to tackle - if ball is passed THEN they work to protect inside shoulder of player on their outside.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.