that other thread caused me to scrutinise this Law, and something is odd about it
Definitions
Knock-on:
When a player loses possession of the ball and it goes forward, or when a player hits the ball forward with the hand or arm, or when the ball hits the hand or arm and goes forward, and the ball touches the ground or another player before the original player can catch it.Definitions
Knock-on:
Law
11 Knock-on or throw forward
Knock-on
11.1 A knock-on may occur anywhere in the playing area.
11.2 It is a knock-on when a player, in tackling or attempting to tackle an opponent, makes contact with the ball and the ball goes forward. Sanction: Scrum (if the ball goes into touch, the non-offending team may opt instead for a quick-throw or lineout).
11.3 A player must not intentionally knock the ball forward with hand or arm. Sanction: Penalty.
11.4 It is not an intentional knock-on if, in the act of trying to catch the ball, the player knocks on provided that there was a reasonable expectation that the player could gain possession.
11.5 The ball is not knocked-on, and play continues, if:
a. A player knocks the ball forward immediately after an opponent has kicked it (charge down).
b. A player rips or knocks the ball from an opponent and the ball goes forward from the opponent’s hand or arm.
Throw forward
11.6 A throw forward may occur anywhere in the playing area. Sanction: Scrum.
11.7 A player must not intentionally throw or pass the ball forward. Sanction: Penalty.
Thoughts
A - I guess the option in 11.2 is not specific to the scenario in 11.2 (knock on in a tackle) and applies to any knock on, but it's not really very well written
B - Interestingly, I notice no option to take a lineout/quickthrow after a throw-forward into touch. I feel pretty sure that when it has happened, I have offered option. Oops