No, there is not. Laws of the game
KNOCK-ON
1-A knock-on may occur anywhere in the playing area.
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).
3-A player must not intentionally knock the ball forward with hand or arm. Sanction: Penalty.
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.
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.
https://laws.worldrugby.org/?law=11&language=EN
There are some areas in the laws of the game where interpretation does play a big role. This aint one of them.