Pass B-A-B-C-B.
A goes to defending position after passing to B and defends 1:1 against B.
A and B change positions after duel.
A sprints to circle and forward to meet B in 1v1 duel.
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.