Hi BrummieRef

Point 1 is covered in the 2018 Law Book as follows:

Law 9 Foul Play

15. Except in a scrum, ruck or maul, a player who is not in possession of the ball must not
hold, push, charge or obstruct an opponent not in possession of the ball.

As the ariving player has not joined the ruck he/she is guilty of foul play. In order to join the ruck they have to bind so “pushing” to the ground whilst bound would then be a ruck clearout.

Acknowledgement to ChrisR for highlighting this new wording of the law in a different thread on this Forum