Throw-In, or Not?

[bob jenkins]

Originally Posted by Nevadaref

An obvious underhand toss to B2 who is near the end line and walking out of bounds. If B1 did that, I wouldn’t whistle a violation. The intent would be clear to me that the team wants B2 to inbound.

That gets to the crux of this philosophical /theoretical discussion.

Is any "propelling" of the ball (I am trying NOT to use rule book terms) of the ball for OOB to IB a throw-in pass, or do we need to determine whether it's with"intentto get the ball in play (that's a rule book term) so as to advance toward and score a goal."